Correlated Rattling of Sodium‐Chains Suppressing Thermal Conduction in Thermoelectric Stannides

Takahiro Yamada, Masato Yoshiya, Masahiro Kanno, Hiroshi Takatsu, Takuji Ikeda, Hideaki Nagai, Hisanori Yamane, Hiroshi Kageyama

Advanced Materials　Vol. 35　No. 11　p. 2207646-2207646　2023/01/26　Research paper (scientific journal)

Engineering Transport Properties in Interconnected Enargite‐Stannite Type Cu_2+xMn_1−xGeS₄ Nanocomposites

V. Pavan Kumar, S. Passuti, B. Zhang, S. Fujii, K. Yoshizawa, P. Boullay, S. Le Tonquesse, C. Prestipino, B. Raveau, P. Lemoine, A. Paecklar, N. Barrier, X. Zhou, M. Yoshiya, K. Suekuni, E. Guilmeau

Angewandte Chemie International Edition　Vol. 61　No. 49　2022/11/07　Research paper (scientific journal)

Frontiers of Novel Functionality at Dislocation Cores

Masato Yoshiya, Atsutomo Nakamura, Susumu Fujii, Yu Oshima, Tatsuya Yokoi, Katsuyuki Matsunaga

Materia Japan　Vol. 61　No. 10　p. 629-633　2022/10/01　Research paper (scientific journal)

First-principles design and experimental validation of β-Ti alloys with high solid-solution strengthening and low elasticities

Kazuki Shitara, Katsuya Yokota, Masato Yoshiya, Junko Umeda, Katsuyoshi Kondoh

Materials Science & Engineering A　Vol. 843　2022/04　Research paper (scientific journal)

Grain-size dependence and anisotropy of nanoscale thermal transport in MgO

Susumu Fujii, Kohei Funai, Tatsuya Yokoi, Masato Yoshiya

APPLIED PHYSICS LETTERS　Vol. 119　No. 23　2021/12　Research paper (scientific journal)

Heat transport through propagon-phonon interaction in epitaxial amorphous-crystalline multilayers

Takafumi Ishibe, Ryo Okuhata, Tatsuya Kaneko, Masato Yoshiya, Seisuke Nakashima, Akihiro Ishida, Yoshiaki Nakamura

Communications Physics　Vol. 4　No. 1　2021/12/01　Research paper (scientific journal)

Substantial role of charge transfer on the diffusion mechanism of interstitial elements in α-titanium: A First-principles study

Kazuki Shitara, Masato Yoshiya, Junko Umeda, Katsuyoshi Kondoh

Scripta Materialia　Vol. 203　2021/10/01　Research paper (scientific journal)

Formation of Extra Vacancies in Nucleating γ Phase during δ-γ Massive-like Phase Transformation in Carbon Steel

Masato YOSHIYA, Katsuya SHIRAI, Hideyuki YASUDA

Journal of Smart Processing　Vol. 10　No. 4　p. 202-207　2021/10/01　Research paper (scientific journal)

Surface segregation of 3mol% yttria-doped tetragonal zirconia particle studied by atomic-resolution scanning transmission electron microscopy-energy-dispersive X-ray spectroscopy

Bin Feng, Akihito Kumamoto, Koji Matsui, Masatoshi Tanemura, Masato Yoshiya, Hidehiro Yoshida, Yuichi Ikuhara

Journal of the Ceramic Society of Japan　Vol. 129　No. 9　p. 561-565　2021/09/01　Research paper (scientific journal)

Direct numerical analyses of nanoscale thermal transport near MgO edge dislocations

Wataru Sekimoto, Susumu Fujii, Masato Yoshiya

Scripta Materialia　Vol. 202　p. 113991-113991　2021/09/01　Research paper (scientific journal)

High-Density Frenkel Defects as Origin of N-Type Thermoelectric Performance and Low Thermal Conductivity in Mg<inf>3</inf>Sb<inf>2</inf>-Based Materials

Tsutomu Kanno, Hiromasa Tamaki, Masato Yoshiya, Hiroshi Uchiyama, Sachiko Maki, Masaki Takata, Yuzuru Miyazaki

Advanced Functional Materials　Vol. 31　No. 13　2021/03/24　Research paper (scientific journal)

Erratum to “Selection of the Massive-like δ-γ Transformation due to Nucleation of Metastable δ Phase in Fe-18 Mass%Cr-Ni Alloys with Ni Contents of 8, 11, 14 and 20 Mass%” [ISIJ International, Vol. 59 (2019), No. 3, pp. 459-465]

Tomohiro Nishimura, Ryota Matsubayashi, Kohei Morishita, Masato Yoshiya, Tomoya Nagira, Hideyuki Yasuda

ISIJ International　Vol. 61　No. 3　p. 1053-1053　2021/03/15　Research paper (scientific journal)

Selection of the Massive-like δ-γ Transformation due to Nucleation of Metastable δ Phase in Fe-18 mass%Cr-Ni Alloys with Ni Contents of 8, 11, 14 and 20 mass%

Tomohiro NISHIMURA, Ryota MATSUBAYASHI, Kohei MORISHITA, Masato YOSHIYA, Tomoya NAGIRA, Hideyuki YASUDA

Tetsu-to-Hagane　Vol. 107　No. 7　p. 558-565　2021/03/01　Research paper (scientific journal)

Transformation from Ferrite to Austenite during/after Solidification in Peritectic Steel Systems: an X-ray Imaging Study

Hideyuki Yasuda, Kohei Morishita, Masato Yoshiya, Taka Narumi

ISIJ International　Vol. 60　No. 12　p. 2755-2764　2020/12/15　Research paper (scientific journal)

Recent progress in nanostructured functional materials and their applications

Tomoyuki Yamamoto, Masato Yoshiya, Hoang Nam Nhat

Materials Transactions　Vol. 61　No. 12　p. 2435-2441　2020/11/25　Research paper (scientific journal)

Special issue on nanostructured functional materials and their applications III

Tomoyuki Yamamoto, Masato Yoshiya, Hoang Nam Nhat

Materials Transactions　Vol. 61　No. 8　2020/08/01　Research paper (scientific journal)

Time-resolved and In-situ Observation of δ?γ Transformation during Unidirectional Solidification in Fe?C Alloys

Tomohiro Nishimura, Kohei Morishita, Masato Yoshiya, Tomoya Nagira, Hideyuki Yasuda

ISIJ International　Vol. 60　No. 5　p. 930-938　2020/05/15　Research paper (scientific journal)

Quantitative prediction of grain boundary thermal conductivities from local atomic environments

Susumu Fujii, Tatsuya Yokoi, Craig A. J. Fisher, Hiroki Moriwake, Masato Yoshiya

Nature Communications　Vol. 11　No. 1　2020/04　Research paper (scientific journal)

Dendrite fragmentation induced by massive-like δ–γ transformation in Fe–C alloys

Hideyuki Yasuda, Kohei Morishita, Noriaki Nakatsuka, Tomohiro Nishimura, Masato Yoshiya, Akira Sugiyama, Kentaro Uesugi, Akihisa Takeuchi

Nature Communications　Vol. 10　No. 1　2019/12　Research paper (scientific journal)

Role of Phonons on Phase Stabilization of RE2Si2O7 over Wide Temperature Range (RE = Yb, Gd)

Susumu Fujii, Arata Ioki, Tatsuya Yokoi, Masato Yoshiya

Journal of the European Ceramic Society　Vol. 40　No. 3　p. 780-788　2019/10　Research paper (scientific journal)

Strengthening Mechanisms of Powder Metallurgy Extruded CP Titanium Materials with Zirconium and Oxygen Solid Solution via Decomposition of ZrO2 Additives in Sintering

Mizuki Fukuo, Shota Kariya, Junko Umeda, Katsuyoshi Kondoh, Masato Yoshiya

Materials Transactions　Vol. 60　No. 9　p. 1881-1889　2019/07　Research paper (scientific journal)

Atomistic mechanisms of thermal transport across symmetric tilt grain boundaries in MgO

Fujii Susumu, Yokoi Tatsuya, Yoshiya Masato

Acta Materialia　Vol. 171　p. 154-162　2019/06　Research paper (scientific journal)

Investigation using 4D-CT of massive-like transformation from the δ to γ phase during and after δ-solidification in carbon steels

Hideyuki Yasuda, Takahiro Hashimoto, Naoki Sei, Kohei Morishita, Masato Yoshiya

IOP Conference Series: Materials Science and Engineering　Vol. 529　No. 1　2019/06　Research paper (scientific journal)

Selection of the massive-like δ/γ transformation in Fe-18mass%Cr-Ni alloys with Ni content of 8, 11, 14 and 20 mass%

T. Nishimura, R. Matsubayashi, K. Morishita, M. Yoshiya, T. Nagira, H. Yasuda

ISIJ International　Vol. 59　No. 3　p. 459-465　2019/03　Research paper (scientific journal)

Time-resolved and in-situ observation of δ-γ transformation during unidirectional solidification in Fe-C alloys

Tomohiro Nishimura, Kohei Morishita, Masato Yoshiya, Tomoya Nagira, Hideyuki Yasuda

Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan　Vol. 105　No. 2　p. 168-176　2019/02　Research paper (scientific journal)

Fe-C鋼の一方向凝固過程におけるδ/γ変態の時間分解・その場観察

西村友宏, 森下浩平, 吉矢真人, 柳楽知也, 安田秀幸

鉄と鋼　Vol. 105　No. 2　p. 290-298　2019/02/01　Research paper (scientific journal)

焼結過程での分解を利用したジルコニウムと酸素の複合固溶による工業用純チタン粉末押出材の強化機構

福生 瑞希, 刈屋 翔太, 梅田 純子, 近藤 勝義, 吉矢 真人

粉体および粉末冶金　Vol. 65　No. 12　p. 746-755　2018/12　Research paper (scientific journal)

Fe固溶強化チタン焼結材の電気化学特性

竹内 彰吾, 畠山 賢彦, 吉矢 真人, 刈屋 翔太, 梅田 純子, 近藤 勝義, 砂田 聡

粉体および粉末冶金　Vol. 65　No. 12　p. 761-765　2018/12　Research paper (scientific journal)

First-principles study in an inter-granular glassy film model of silicon nitride

Wai-Yim Ching, Masato Yoshiya, Puja Adhikari, Paul Rulis, Yuichi Ikuhara, Isao Tanaka

Journal of the American Ceramic Society　Vol. 101　No. 7　p. 2673-2688　2018/07/01　Research paper (scientific journal)

Quantifying Anharmonic Vibrations in Thermoelectric Layered Cobaltites and Their Role in Suppressing Thermal Conductivity

Susumu Fujii, Masato Yoshiya, Craig A. J. Fisher

Scientific Reports　Vol. 8　No. 1　2018/07　Research paper (scientific journal)

Hierarchically Structured Thermoelectric Materials in Quaternary System Cu-Zn-Sn-S Featuring a Mosaic-type Nanostructure

ACS Appl. Nano Mater.　Vol. 1　No. 6　p. 2579-2588　2018/05/01　Research paper (scientific journal)

Native point defects in MoS2 and their influences on optical properties by first principles calculations

Ashim Kumar Saha, Masato Yoshiya

Physica B: Condensed Matter　Vol. 532　p. 184-194　2018/03/01　Research paper (scientific journal)

Atomistic simulations of grain boundary transformation under high pressures in MgO

T. Yokoi, M. Yoshiya

Physica B: Condensed Matter　Vol. 532　p. 2-8　2018/03/01　Research paper (scientific journal)

Strengthening mechanisms of powder metallurgy extruded CP titanium materials with zirconium and oxygen solid solution via decomposition of ZrO 2 additives in sintering

Mizuki Fukuo, Shota Kariya, Junko Umeda, Katsuyoshi Kondoh, Masato Yoshiya

Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy　Vol. 65　No. 12　p. 746-755　2018　Research paper (scientific journal)

X-ray imaging of formation and growth of spheroidal graphite in ductile cast Iron

H. Yasuda, A. Sugiyama, C. Kiattisaksri, K. Morishita, T. Nagira, M. Yoshiya, K. Uesugi, A. Takeuch

Materials Science Forum　Vol. 925 MSF　p. 104-109　2018/01/01　Research paper (scientific journal)

Density functional study of the phase stability and Raman spectra of Yb2O3, Yb2SiO5 and Yb2Si2O7 under pressure

Takafumi Ogawa, Noriko Otani, Taishi Yokoi, Craig A. J. Fisher, Akihide Kuwabara, Hiroki Moriwake, Masato Yoshiya, Satoshi Kitaoka, Masasuke Takata

Physical Chemistry Chemical Physics　Vol. 20　No. 24　p. 16518-16527　2018　Research paper (scientific journal)

Massive-like Transformation in Fe-Cr-Ni Alloys: In-situ and Time-resolved Observation

T. Nishimura, K. Morishita, T. Nagira, M. Yoshiya, H. Yasuda

Proceedings of the 6th Decennial International Conference on Solidification Processing　p. 431-433　2017/07　Research paper (international conference proceedings)

Elucidation of Mechanism of Emergence of Magnetic Anisotropy in FePd by Phase-Field Modeling

UESHIMA Nobufumi, YOSHIYA Masato, YASUDA Hideyuki

Journal of the Japan Society for Precision Engineering　Vol. 83　No. 5　p. 415-419　2017/05/01　Research paper (other academic)

Time-resolved and in-situ observation of solidification phenomena

Hideyuki Yasuda, Tomoya Nagira, Masato Yoshiya, Kohei Morishita, Kazuhiro Nogita

Yosetsu Gakkai Shi/Journal of the Japan Welding Society　Vol. 86　p. 362-363　2017/01/01　Research paper (other academic)

In Situ Observations of Tensile and Compressive Deformations in Semi Solid Metallic Alloys Using Time-resolved X-ray Imaging

Tomoya Nagira, Hideyuki Yasuda, Ryo Unoki, Kouhei Morishita, Akira Sugiyama, Masato Yoshiya, Kentarou Uesugi

TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN　Vol. 103　No. 12　p. 2-11　2017　Research paper (scientific journal)

Preface to the Special Issue Entitled "Dynamics in Solid-Liquid Coexistence and Controlling of Segregation during Solidification"

Munekazu Ohno

TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN　Vol. 103　No. 12　p. 1-1　2017　Research paper (scientific journal)

Preface to Special Topic: Cutting Edge Physics in Functional Materials

Nam Nhat Hoang, Tomoyuki Yamamoto, Masato Yoshiya, Markus Muenzenberg

JOURNAL OF APPLIED PHYSICS　Vol. 120　No. 14　2016/10

A density functional theory study of electronic and magnetic properties of rare earth doped monolayered molybdenum disulphide

Abdul Majid, Anum Imtiaz, Masato Yoshiya

JOURNAL OF APPLIED PHYSICS　Vol. 120　No. 14　2016/10　Research paper (scientific journal)

計算材料科学による熱電材料へのアプローチ

吉矢真人

まてりあ　Vol. 55　No. 7　p. 320-324　2016/07/01　Research paper (other academic)

Isolated energy level in the band gap of Yb2Si2O7 identified by electron energy-loss spectroscopy

Takafumi Ogawa, Shunsuke Kobayashi, Masashi Wada, Craig A. J. Fisher, Akihide Kuwabara, Takeharu Kato, Masato Yoshiya, Satoshi Kitaoka, Hiroki Moriwake

PHYSICAL REVIEW B　Vol. 93　No. 20　2016/05　Research paper (scientific journal)

Secondary γ-Phase Nucleation in Massive-like Phase Transformation of Carbon Steel by Phase-Field Modeling with Energy Fluctuations

AMTC Lett.　Vol. 5　p. 144-145　2016/05/01　Research paper (scientific journal)

Systematic Study of Mechanism of Thermal Expansion in Silicides for Date-driven Materials Design

AMTC Lett.　Vol. 5　p. 122-123　2016/05/01　Research paper (scientific journal)

First-Principles Study of Thermal Expansion Coefficient of Complex Oxides for Thermal Barrier Coating

AMTC Lett.　Vol. 5　p. 134-135　2016/05/01　Research paper (scientific journal)

Effect of Oxide-Ion Position on Grain Boundary Energy in ZrO2-based Oxides: Simulated Annealing Approaches

AMTC Lett.　Vol. 5　p. 92-93　2016/05/01　Research paper (scientific journal)

Study of structure dependent electronic properties of MoS2

AMTC Lett.　Vol. 5　p. 90-91　2016/05/01　Research paper (scientific journal)

Solidification sequence of ductile cast iron -in-situ observation and modeling-

Proceedings of the 72nd world Foundry Congress(WFC2016)　2016/05/01　Research paper (international conference proceedings)

Lattice Thermal Conduction of Two-Dimensional CoO2 Layers in Thermoelectric Cobaltites

AMTC Lett.　Vol. 5　p. 118-119　2016/05/01　Research paper (scientific journal)

Manipulating Thermal Conductivity by Interfacial Modification of Misfit-Layered Cobaltites Ca3Co4O9

Susumu Fujii, Masato Yoshiya

JOURNAL OF ELECTRONIC MATERIALS　Vol. 45　No. 3　p. 1217-1226　2016/03　Research paper (scientific journal)

Numerical Analyses of Microscopic Thermal Conduction

Vol. 36　No. 1　p. 25-33　2016/01/01　Research paper (scientific journal)

Influence of Mg on Solidification of Hypereutectic Cast Iron: X-ray Radiography Study

K. Yamane, Hideyuki Yasuda, A. Sugiyama, T. Nagira, M. Yoshiya, K. Morishita, K. Uesugi, A. Takeuchi, Y. Suzuki

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE　Vol. 46A　No. 11　p. 4937-4946　2015/11　Research paper (scientific journal)

Atomistic Analyses of Competition between Site-Selective Segregation and Association of Point Defects at Grain Boundary in Y2O3-Doped ZrO2

T. Yokoi, M. Yoshiya, H. Yasuda

MATERIALS TRANSACTIONS　Vol. 56　No. 9　p. 1344-1349　2015/09　Research paper (scientific journal)

Concurrent gamma-Phase Nucleation as a Possible Mechanism of delta-gamma Massive-like Phase Transformation in Carbon Steel: Numerical Analysis Based on Effective Interface Energy

Masato Yoshiya, Manabu Watanabe, Kenta Nakajima, Nobufumi Ueshima, Koki Hashimoto, Tomoya Nagira, Hideyuki Yasuda

MATERIALS TRANSACTIONS　Vol. 56　No. 9　p. 1467-1474　2015/09　Research paper (scientific journal)

Interface Energies of Hetero- and Homo-Phase Boundaries and Their Impact on delta-gamma Massive-Like Phase Transformations in Carbon Steel

Masato Yoshiya, Kenta Nakajima, Manabu Watanabe, Nobufumi Ueshima, Tomoya Nagira, Hideyuki Yasuda

MATERIALS TRANSACTIONS　Vol. 56　No. 9　p. 1461-1466　2015/09　Research paper (scientific journal)

Yet Another Marked Difference among Impurities as Modifier Elements for Refinement of Eutectic Si in Al-Si Alloys

Yosuke Suzuki-Yamamoto, Ryota Ozaki, Masato Yoshiya, Tomoya Nagira, Hideyuki Yasuda

MATERIALS TRANSACTIONS　Vol. 56　No. 9　p. 1475-1483　2015/09　Research paper (scientific journal)

摂動分子動力学法による2.5次元材料の熱伝導機構の解明

吉矢真人

2015/09　Research paper (other academic)

In Situ Observation of Cracking Formation Induced by Deformation in Semi-solid Al-Cu Alloys

Nagira Tomoya, Yasuda Hideyuki, Morita Shugo, Yanai Shingo, Sugiyama Akira, Yoshiya Masato, Uesugi Kentaro

Journal of Japan Foundry Engineering Society　Vol. 87(2015)　No. 8　p. 552-560　2015/08　Research paper (scientific journal)

Numerically-quantified two dimensionality of microstructure evolution accompanying variant selection of FePd

N. Ueshima, M. Yoshiya, H. Yasuda, T. Fukuda, T. Kakeshita

MATERIALS RESEARCH EXPRESS　Vol. 2　No. 7　2015/07　Research paper (scientific journal)

On modeling of grain boundary segregation in aliovalent cation doped ZrO2: Critical factors in site-selective point defect occupancy

T. Yokoi, M. Yoshiya, H. Yasuda

SCRIPTA MATERIALIA　Vol. 102　p. 91-94　2015/06　Research paper (scientific journal)

Si系セラミックスの電子線エネルギー損失分光吸収端近傍微細構造(ELNES)の理論計算

吉矢真人, 田中功, 足立裕彦

DV-Xα研究協会会報　2015/04　Research paper (scientific journal)

Localization of shear strain and shear band formation induced by deformation in semi-solid Al-Cu alloys

T. Nagira, S. Morita, H. Yasuda, C. M. Gourlay, M. Yoshiya, A. Sugiyama, K. Uesugi

MCWASP XIV: INTERNATIONAL CONFERENCE ON MODELLING OF CASTING, WELDING AND ADVANCED SOLIDIFICATION PROCESSES　Vol. 84　2015　Research paper (international conference proceedings)

Kinetics of the delta/gamma interface in the massive-like transformation in Fe-0.3C-0.6Mn-0.3Si alloys

T. Nishimura, K. Morishita, T. Nagira, M. Yoshiya, H. Yasuda

MCWASP XIV: INTERNATIONAL CONFERENCE ON MODELLING OF CASTING, WELDING AND ADVANCED SOLIDIFICATION PROCESSES　Vol. 84　2015　Research paper (international conference proceedings)

Application of a macroscopic model to predict the band segregation induced by shear deformation of semisolid

S. Morita, H. Yasuda, T. Nagira, C. M. Gourlay, K. Morishita, M. Yoshiya, A. Sugiyama

MCWASP XIV: INTERNATIONAL CONFERENCE ON MODELLING OF CASTING, WELDING AND ADVANCED SOLIDIFICATION PROCESSES　Vol. 84　2015　Research paper (international conference proceedings)

Impacts of Interface Energies and Transformation Strain from BCC to FCC on Massive-like delta-gamma Transformation in Steel

M. Yoshiya, M. Sato, M. Watanabe, K. Nakajima, T. Yokoi, N. Ueshima, T. Nagira, H. Yasuda

MCWASP XIV: INTERNATIONAL CONFERENCE ON MODELLING OF CASTING, WELDING AND ADVANCED SOLIDIFICATION PROCESSES　Vol. 84　2015　Research paper (international conference proceedings)

Optical properties and core state of AlN-BN ternary compound by ab initio calculations

Masashi Yamashita, Noriaki Hamada, Hiroki Funashima, Masato Yoshiya

PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 12, NO 6　Vol. 12　No. 6　p. 647-650　2015　Research paper (international conference proceedings)

Nonrandom Point Defect Configurations and Driving Force Transitions for Grain Boundary Segregation in Trivalent Cation Doped ZrO2

T. Yokoi, M. Yoshiya, H. Yasuda

LANGMUIR　Vol. 30　No. 47　p. 14179-14188　2014/12　Research paper (scientific journal)

Time-resolved X-ray imaging of deformation in semi-solid alloys at high solid fraction

Tomoya NAGIRA, Shugo MORITA, Shingo YANAI, Hideyuki YASUDA, Christopher M. GOURLAY, Masato YOSHIYA, Akira SUGIYAMA, Kentaro UESUGI

Proceedings of Modeling of Casting and Solidification Processes　2014/11　Research paper (international conference proceedings)

In Situ Observation of Deformation in Semi-solid Fe-C Alloys at High Shear Rate

Tomoya Nagira, Shugo Morita, Hiroyoshi Yokota, Hideyuki Yasuda, Christopher M. Gourlay, Masato Yoshiya, Akira Sugiyama, Kentaro Uesugi, Akihisa Takeuchi, Yoshio Suzuki

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE　Vol. 45A　No. 12　p. 5613-5623　2014/11　Research paper (scientific journal)

Interface Energy between delta- and gamma-Phases of Low Cabon Steel

M. Yoshiya, K. Nakajima, M. Watanabe, T. Nagira, H. Yasuda

Proceedings of Modeling of Casting and Solidification Processes　2014/11　Research paper (international conference proceedings)

A preliminary study for In-situ measurement of solute-patition for Ni-based alloys by using X-ray imaging and fluorescent X-ray analysis

I. Uwabe, K. Morishita, T. Nagira, M. Yoshiya, H. Yasuda

Proceedings of Modeling of Casting and Solidification Processes　2014/11　Research paper (international conference proceedings)

Interface morphology in the massive-like transformation followingδ-phase solidification in Fe-C alloys

T. Nishimura, K. Morishita, H. Yasuda, T. Nagira, M. Yoshiya, A. Takeuchi, Y. Suzuki

Proceedings of Modeling of Casting and Solidification Processes　2014/11　Research paper (international conference proceedings)

A Macroscopic Model of Semisolid Deformation including Rearrangement of Solid Grains

S. Morita, T. Ito, T. Uchida, T. Nagira, K. Morishita, H. Yasuda, C. M. Gourlay, M. Yoshiya

Proceedings of Modeling of Casting and Solidification Processes　2014/11　Research paper (international conference proceedings)

Distribution of modifier elements in hypereutectic Al-Si alloy and a suggestion of the mechanism of modification

R. Ozaki, H. Yasuda, K. Nogita, T. Nagira, M. Yoshiya, Y. Terada

Proceedings of Modeling of Casting and Solidification Processes　2014/11　Research paper (international conference proceedings)

Sequence of the structure formation of the gray cast iron

A. Sugiyama, H. Yasuda, K. Yamane, T. Nagira, M. Yoshiya, K. Uesugi, A. Takauchi, Y, Suzuki

Proceedings of Modeling of Casting and Solidification Processes　2014/11　Research paper (international conference proceedings)

Driving force atδ/γinterface inthemassive-like transformationfollowing theδsolidification in Fe-C alloys

K. Sugimura, T. Nishimura, K. Morishita, H. Yasuda, T. Nagira, M. Yoshiya

Proceedings of Modeling of Casting and Solidification Processes　2014/11　Research paper (international conference proceedings)

放射光X線イメージングを利用した炭素鋼の凝固現象の解明

柳楽知也, 安田秀幸, 吉矢真人

まてりあ　Vol. 53　No. 10　p. 467-470　2014/10/01　Research paper (other academic)

Influence of Mg Content on Graphite Growth in Hypereutectic Cast Iron and Crystallographic Feature of Graphite

Yamane Koshiro, Sugiyama Akira, Nagira Tomoya, Yoshiya Masato, Yasuda Hideyuki, Tanaka Yuuta, Satou Akihiro, Uesugi Kentarou, Takeuchi Akihisa, Suzuki Yoshio, Honda Hiroshi, Satou Ken

Journal of Japan Foundry Engineering Society　Vol. 86　No. 6　p. 461-470　2014/06　Research paper (scientific journal)

Impact of Dynamic Interlayer Interactions on Thermal Conductivity of Ca3Co4O9

Susumu Fujii, Masato Yoshiya, Akuto Yumura, Yohei Miyauchi, Masahiro Tada, Hideyuki Yasuda

JOURNAL OF ELECTRONIC MATERIALS　Vol. 43　No. 6　p. 1905-1915　2014/06　Research paper (scientific journal)

Analysis of Relationship between Dynamic Interlayer Interactions and Phonon Thermal Conduction in Ca3Co4O9

S. Fujii, A. Yumura, Y. Miyauchi, M. Tada, M. Yoshiya, H. Yasuda

AMTC Lett.　2014/06　Research paper (international conference proceedings)

Mechanism for Variant Selection in L10-type Ferromagnetic Alloys under Three Dimensionally Constrained Conditions

N. Ueshima, M. Yoshiya, H. Yasuda

AMTC Lett.　2014/06　Research paper (international conference proceedings)

Effect of Mismatching Interface Energy on γ-Fe Nucleation upon δ/γ Transformation of Carbon Steel

M. Watanabe, K. Nakajima, N. Ueshima, M. Yoshiya, T. Nagira, H. Yasuda

AMTC Lett.　2014/06　Research paper (international conference proceedings)

Suppression of Thermal Conduction without Deteriorating Electronic Properties of Magneli Phase Titanium Oxides by Doping Impurities

D. Kanayama, A. Yumura, S. Fujii, T. Yokoi, Y. Miyauchi, M. Yoshiya

AMTC Lett.　2014/06　Research paper (international conference proceedings)

Influences of Lattice and Bond Strain on Nucleation-Triggered Massilve-like delta-gamma Transformation of Carbon Steel

M. Sato, M. Watanabe, K. Nakajima, N. Ueshima, M. Yoshiya, T. Nagira, H. Yasuda

AMTC Lett.　2014/06　Research paper (international conference proceedings)

凝固現象のその場観察技術とその応用

安田秀幸, 柳樂知也, 吉矢真人, 杉山明, 中塚憲章, 森田周吾

ふぇらむ　2014/02/01　Research paper (other academic)

Impact of interplay between magnetic field, transformation strain, and coarsening on variant selection in L1(0)-type FePd

N. Ueshima, M. Yoshiya, H. Yasuda, T. Fukuda, T. Kakeshita

JOURNAL OF APPLIED PHYSICS　Vol. 115　No. 7　2014/02　Research paper (scientific journal)

Al-Cu合金の固液共存体のせん断ひずみの局在化とせん断帯形成

柳楽知也, 安田秀幸, 森田周吾, 横田大和, 吉矢真人, C.M.Gourlay, 杉山明, 上杉健太朗

まてりあ　2013/12/01　Research paper (other academic)

FCC相からL10相への変態初期におけるひずみ場の効果

上島伸文, 吉矢真人, 安田秀幸

日本機械学会第26回計算力学講演会CD-ROM論文集　2013/12　Research paper (scientific journal)

Effect of Spatial Distribution of Local Magnetization on Microstructure Formation in L10-type Ferromagnetic Alloys under External Magnetic Field

Nobufumi UESHIMA, Toshiyuki SHIKATANI, Masato YOSHIYA, Hideyuki YASUDA

Trans. Mater. Res. Soc. Jpn.　Vol. 38　No. 4　p. 673-676　2013/12　Research paper (scientific journal)

純鉄のδ／γ界面エネルギー計算と鉄鋼材料のδ／γ変態におけるγ―Fe核生成への影響の解析

渡邉学, 中島健太, 上島伸文, 吉矢真人, 柳楽知也, 安田秀幸

日本機械学会第26回計算力学講演会CD-ROM論文集　2013/12　Research paper (scientific journal)

時間分解X線イメージングによるMg添加過共晶Fe-3.8C-3.1Si合金の凝固形態の観察

山根功士朗, 安田秀幸, 杉山明, 柳楽知也, 吉矢真人, 上杉健太朗, 梅谷啓二, 牛込智章, 佐藤彰洋

鋳造工学　2013/11　Research paper (scientific journal)

Characterization of Shear Deformation Based on In-situ Observation of Deformation in Semi-Solid Al-Cu Alloys and Water-Particle Mixture

Nagira Tomoya, Yokota Hiroyoshi, Morita Shugo, Yasuda Hideyuki, Yoshiya Masato, Gourlay C. M, Sugiyama Akira, Uesugi Kentarou, Umetani Keiji

TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN　Vol. 99　No. 2　p. 141-148　2013/02/01　Research paper (other academic)

Characterization of shear deformation based on in-situ observation of deformation in semi-solid al-cu alloys and water-particle mixture

Tomoya Nagira, Hiroyoshi Yokota, Shugo Morita, Hideyuki Yasuda, Masato Yoshiya, Christopher M. Gourlay, Akira Sugiyama, Kentarou Uesugi, Keiji Umetani

ISIJ International　Vol. 53　No. 7　p. 1195-1201　2013　Research paper (scientific journal)

Mechanisms behind Thermal Conduction in Nanolayered Thermoelectric Oxides

M. Yoshiya, M. Tada, Y. Miyauchi, S. Fujii, H. Yasuda

2013/01　Research paper (other academic)

Direct Observation of Shear Deformation in Semi-solid Alloys Using X-ray Imaging

NAGIRA Tomoya, YASUDA Hideyuki, GOURLAY C. M., SUGIYAMA Akira, YOSHIYA Masato, UESUGI Kentarou, UMETANI Keiji

Bulletin of the Japan Institute of Metals　Vol. 51　No. 12　p. 561-568　2012/12/01　Research paper (other academic)

Effect of Coulombic Interaction between Layers on Lattice Thermal Conductivity in NaxCoO2

M. Tada, Y. Miyauchi, M. Yoshiya, H. Yasuda

AMTC Lett.　2012/12　Research paper (international conference proceedings)

Atomic-Level Modeling and Computation of Intergranular Glassy Film in Si3N4 ceramics

M. Yoshiya, I. Tanaka, H. Adachi

J. Euro. Ceram. Soc.　2012/12　Research paper (scientific journal)

L10 型強磁性合金のバリアント選択におけるひずみ場の役割

上島伸文, 吉矢真人, 安田秀幸

日本機械学会第２５回計算力学講演会CD-ROM論文集　2012/12　Research paper (scientific journal)

Atomistic analysis of dopant and oxygen vacancy segregation to grain boundary and its contribution to ionic conductivity in M2O3-doped ZrO2

T. Yokoi, Y. Yoshizawa, M. Yoshiya, H. Yasuda

AMTC Lett.　2012/12　Research paper (international conference proceedings)

Anisotropy of Lattice Thermal Conduction in TiO2-x with High Density of Planar Defects by Atomistic Simulations

Y. Miyauchi, M. Tada, M. Yoshiya, S. Harada, K. Tanaka, H. Yasuda, H. Inui

AMTC Lett.　2012/12　Research paper (international conference proceedings)

Phase Field Analysis of the Mechanism of Variant Selection in FePd

N. Ueshima, M. Yoshiya, H. Yasuda

AMTC Lett.　2012/12　Research paper (international conference proceedings)

Effect of Mismatch of Atomic Configuration on Nucleation

K. Nakajima, N. Ueshima, M. Yoshiya, H. Yasuda

AMTC Lett.　2012/12　Research paper (international conference proceedings)

Effect of Fluctuation on Departure of Interface Morphology from Planar Interface during Unidirectional Solidification by Phase-Field Modeling

M. Watanabe, N. Ueshima, M. Yoshiya, H. Yasuda

AMTC Lett.　2012/12　Research paper (international conference proceedings)

Stability of layered alkali-metal oxides A0.5CoO2 and A0.5FeO2 (A=Li, Na, K, Mg, Ca, Sr)

A. Yumura, M. Tada, K. Nakano, M. Yoshiya, H. Yasuda

AMTC Lett.　2012/12　Research paper (international conference proceedings)

Analysis of proton creation mechanism of trivalent cations doped BaZrO3 by first principles calculations

K. Nakano, M. Yoshiya, H. Yasuda, A. Kuwabara

AMTC Lett.　2012/12　Research paper (international conference proceedings)

Building up a strategy to control lattice thermal conductivity in layered cobalt oxides

M. Tada, Y. Miyauchi, M. Yoshiya, H. Yasuda

Technical Digest of Frontiers in Electronic Materials A Collection of Extended Abstracts of the Nature Conference Frontiers in Electronic Materials　2012/12　Research paper (other academic)

Direct Observation of Thermoelectric Magnetic Convection in Unidirectionally Solidified Al-Cu Alloys

H. Yasuda, K. Inoue, Y. Minami, T. Nagira, M. Yoshiya, K. Uesugi, K. Umetani

J. Iron Steel Res. Int.　2012/12　Research paper (scientific journal)

金属の固液共存状態におけるせん断変形による偏析形成のその場観察

柳楽知也, 安田秀幸, C.M. Gourlay, 杉山明, 吉矢真人, 上杉健太朗, 梅谷啓二

放射光　2012/12

In-situ observation of shear deformation in semi-solid Al-Cu alloys

T. Nagira, S. Morita, H. Yasuda, C.M. Gourlay, A. Sugiyama, M. Yoshiya, K. Uesugi, K. Umetani

Proc. Visual-JW2012　2012/12　Research paper (international conference proceedings)

In-situ Observation of Solidification in Ni-based Superalloys by X-ray Imaging

K. Yamane, H. Yasuda, M. Yoshiya, T. Nagira, A. Sato

Proc. Visual-JW2012　2012/12　Research paper (international conference proceedings)

樹脂接着活性点制御に基づく高離型・防汚性型部材の設計

北岡諭, 川島直樹, 中平兼司, 吉矢真人

マテリアルインテグレーション　2012/12

Application of in-situ observation to a macroscopic model of semisolid deformation

S. Morita, T. Nagira, H. Yasuda, C.M. Gourlay, M. Yoshiya

Proceedings of Visual-JW2012　2012/11/01　Research paper (international conference proceedings)

Estimation of permeability in the mushy region using in-situ observation of growing dendrites

T. Kondo, H. Yasuda, A. Sugiyama, M. Yoshiya, T. Nagira, K. Uesugi, K. Umetani

Proceedings of Visual-JW2012　2012/11/01　Research paper (international conference proceedings)

In-situ measurement of solute profile during solidification of metallic alloys

2012/11/01　Research paper (other academic)

Al-Si合金に添加されたSrの存在状態

安田 秀幸, 吉矢 真人, 柳楽 知也, 野北 和宏

鋳造工学 全国講演大会講演概要集　Vol. 161　p. 144-144　2012/07/04　Research paper (bulletin of university, research institution)

固液共存体の不均一変形を再現するマクロモデルの検証

森田 周吾, 安田 秀幸, 柳楽 知也, 吉矢 真人

鋳造工学 全国講演大会講演概要集　Vol. 161　p. 134-134　2012/07/04　Research paper (bulletin of university, research institution)

その場観察により観察された球形状グラファイトの特徴

山根 功士朗, 柳楽 知也, 安田 秀幸, 杉山 明, 吉矢 真人, 牛込 智章, 佐藤 彰洋, 梅谷 啓二, 上杉 健太朗

鋳造工学 全国講演大会講演概要集　Vol. 161　p. 14-14　2012/07/04　Research paper (bulletin of university, research institution)

固液共存状態においてせん断速度がせん断変形組織に与える影響

柳楽 知也, 森田 周吾, 横田 大和, 安田 秀幸, 杉山 明, Gourlay C. M., 吉矢 真人, 上杉 健太朗

鋳造工学 全国講演大会講演概要集　Vol. 161　p. 133-133　2012/07/04　Research paper (bulletin of university, research institution)

過共晶Fe-C合金で観察された溶解挙動におよぼすMgの影響

安田 秀幸, 杉山 明, 柳楽 知也, 吉矢 真人, 山根 功士朗, 牛込 智章, 佐藤 彰洋, 梅谷 啓二, 上杉 健太朗

鋳造工学 全国講演大会講演概要集　Vol. 161　p. 15-15　2012/07/04　Research paper (bulletin of university, research institution)

X線イメージング法を用いた球状黒鉛鋳鉄の凝固過程に与えるMgの影響の直接観察

山根 功士朗, 牛込 智章, 佐藤 彰洋, 安田 秀幸, 杉山 明, 吉矢 真人, 柳楽 知也, 梅谷 啓二, 上杉 健太朗

鋳造工学 全国講演大会講演概要集　Vol. 160　p. 101-101　2012/07/04　Research paper (bulletin of university, research institution)

X線イメージング法を用いた亜共晶鋳鉄の凝固過程の高分解能直接観察

杉山 明, 安田 秀幸, 山根 功士朗, 吉矢 真人, 柳楽 知也, 牛込 智章, 佐藤 彰洋, 梅谷 啓二, 上杉 健太朗

鋳造工学 全国講演大会講演概要集　Vol. 160　p. 100-100　2012/07/04　Research paper (bulletin of university, research institution)

溶解過程の観察により見いだされた過共晶鋳鉄へのMg添加の影響

安田 秀幸, 山根 功士朗, 杉山 明, 吉矢 真人, 柳楽 知也, 牛込 智章, 佐藤 彰洋, 梅谷 啓二, 上杉 健太朗

鋳造工学 全国講演大会講演概要集　Vol. 160　p. 102-102　2012/07/04　Research paper (bulletin of university, research institution)

せん断変形における偏析形成を再現する固液二相流マクロモデルの検討

森田 周吾, 安田 秀幸, 柳楽 知也, 吉矢 真人

鋳造工学 全国講演大会講演概要集　Vol. 160　p. 41-41　2012/07/04　Research paper (bulletin of university, research institution)

片状黒鉛鋳鉄の凝固組織とその形成過程

杉山 明, 前川 裕貴, 後藤 耕太, 山根 功士朗, 安田 秀幸, 吉矢 真人, 柳楽 知也, 牛込 智章, 佐藤 彰洋, 梅谷 啓二, 上杉 健太朗

鋳造工学 全国講演大会講演概要集　Vol. 161　p. 13-13　2012/07/04　Research paper (bulletin of university, research institution)

Atomic-level modeling and computation of intergranular glassy film in high-purity Si3N4 ceramics

Masato Yoshiya, Isao Tanaka, Hirohiko Adachi

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY　Vol. 32　No. 7　p. 1301-1311　2012/06　Research paper (scientific journal)

D03型Fe3Al金属間化合物中の規則ドメイン成長のフェーズフィールドシミュレーション

小泉雄一郎, 井達矢, 大内允之, 南埜宜俊, 吉矢真人, 千葉晶彦

材料とプロセス (CAMP-ISIJ)　Vol. 25　2012/03　Research paper (other academic)

Phase-Field Study of Ordered Domain Growth and Segregation in Intermetallics

KOIZUMI Yuichiro, YOKOI Tatsuya, OUCHI Masayuki, MINAMINO Yoritoshi, YOSHIYA Masato, CHIBA Akihiko, M. ALLEN Samuel

Bulletin of the Japan Institute of Metals　Vol. 51　No. 2　p. 53-61　2012/02/01　Research paper (other academic)

Macroscopic modelling of semisolid deformation for considering segregation bands induced by shear deformation

S. Morita, H. Yasuda, T. Nagira, C. M. Gourlay, M. Yoshiya, A. Sugiyama

MCWASP XIII: INTERNATIONAL CONFERENCE ON MODELING OF CASTING, WELDING AND ADVANCED SOLIDIFICATION PROCESSES　Vol. 33　2012　Research paper (international conference proceedings)

Improving Releasability of Mold Materials for IC Encapsulation using Epoxy Compounds

Satoshi Kitaoka, Naoki Kawashima, Masato Yoshiya, Shigeru Miyagawa, Yoshinori Noguchi, Kazuhiro Ikemura

THERMEC 2011, PTS 1-4　Vol. 706-709　p. 2529-+　2012　Research paper (international conference proceedings)

In-situ observation of peritectic solidification in Sn-Cd and Fe-C alloys

H. Yasuda, T. Nagira, M. Yoshiya, M. Uesugi, N. Nakatsuka, M. Kiire, A. Sugiyama, K. Uesugi, K. Umetani

3RD INTERNATIONAL CONFERENCE ON ADVANCES IN SOLIDIFICATION PROCESSES　Vol. 27　2012　Research paper (international conference proceedings)

In Situ Observation of Solidification and Related Phenomena in Steels

H. Yasuda, T. Nagira, M. Yoshiya, A. Sugiyama, N. Nakatsuka, S. Morita, M. Uesugi, K. Ukesugi, K. Umetani, K. Kajiwara

2011/12　Research paper (international conference proceedings)

Analyses of Phonon Thermal Conductivity and Structure in a Layered Oxide Thermoelectric Material NaxCoO2

M. Tada, M. Yoshiya, H. Yasuda

2011/12　Research paper (international conference proceedings)

Thermal Conductivity of Thermoelectric Oxides with Nano-Interfaces

Y. Miyauchi, M. Tada, M. Yoshiya, H. Yasuda

2011/12　Research paper (international conference proceedings)

計算機実験を利用した粒界イオン伝導機構の解明の試み

吉矢真人, 清水啓介, 吉澤勇也, 横井達矢, 尾山貴司, クレイグ・フィッシャー, 安田秀幸

セラミックス　2011/12

Improving grain boundary ionic conductivity by controlling grain boundary segregation

M. Yoshiya, T. Yokoi, K. Shimizu, Y. Yoshizawa, C. A. J. Fisher, H. Yasuda

2011/08　Research paper (other academic)

Atomistic mechanism governing thermal conduction in layerd thermoelectric oxides

M. Yoshiya, M. Tada, Y. Miyauchi, H. Yasuda

2011/08　Research paper (other academic)

X線イメージングによる球状黒鉛鋳鉄の凝固過程の直接観察

山根 功士朗, 佐藤 彰洋, 安田 秀幸, 杉山 明, 吉矢 真人, 柳楽 智也, 梅谷 啓二, 上杉 健太朗

鋳造工学 全国講演大会講演概要集　Vol. 159　p. 55-55　2011/07/03　Research paper (bulletin of university, research institution)

放射光を利用した鉄鋼材料の固液共存状態におけるせん断変形のその場観察

柳楽 知也, Christopher Gourlay, 安田 秀幸, 森田 周吾, 杉山 明, 吉矢 真人, 上杉 健太朗, 梅谷 啓二

鋳造工学 全国講演大会講演概要集　Vol. 159　p. 54-54　2011/07/03　Research paper (bulletin of university, research institution)

固相間相互作用を考慮した固液共存状態のせん断変形マクロモデルの検討

森田 周吾, 安田 秀幸, 柳楽 知也, 吉矢 真人

鋳造工学 全国講演大会講演概要集　Vol. 159　p. 27-27　2011/07/03　Research paper (bulletin of university, research institution)

放射光を利用したアルミニウム合金の凝固現象の解明

安田秀幸, 野北和宏, 山本洋介, 柳楽知也, 吉矢真人, 上杉健太朗, 梅谷啓二, 竹内晃久, 鈴木芳夫

軽金属　2011/06/01　Research paper (other academic)

In situ investigation of unidirectional solidification in Sn-0.7Cu and Sn-0.7Cu-0.06Ni

C. M. Gourlay, K. Nogita, A. K. Dahle, Y. Yamamoto, K. Uesugi, T. Nagira, M. Yoshiya, H. Yasuda

ACTA MATERIALIA　Vol. 59　No. 10　p. 4043-4054　2011/06/01　Research paper (scientific journal)

Direct observation of deformation in semi-solid carbon steel

T. Nagira, C. M. Gourlay, A. Sugiyama, M. Uesugi, Y. Kanzawa, M. Yoshiya, K. Uesugi, K. Umetani, H. Yasuda

SCRIPTA MATERIALIA　Vol. 64　No. 12　p. 1129-1132　2011/06/01　Research paper (scientific journal)

Impurity and vacancy segregation at symmetric tilt grain boundaries in Y2O3-doped ZrO2

Masato Yoshiya, Takashi Oyama

JOURNAL OF MATERIALS SCIENCE　Vol. 46　No. 12　p. 4176-4190　2011/06　Research paper (scientific journal)

Direct Observation of Solidification of Cast Iron by Time-resolved X-ray Imaging

SUGIYAMA Akira, YASUDA Hideyuki, NAGIRA Tomoya, YOSHIYA Masato, UESUGI Kentaro, UMETANI Keiji, OHNAKA Itsuo

THE JOURNAL OF THE JAPAN FOUNDRYMEN'S SOCIETY　Vol. 83　No. 3　p. 131-136　2011/03/25　Research paper (other academic)

Erratum to: A First-Principles Study of the Role of Na Vacancies in the Thermoelectricity of NaxCoO2

M. Yoshiya, T. Okabayashi, M. Tada, C. A. J. Fisher

2011/03　Research paper (scientific journal)

Atomic-level analyses of thermal conduction in magneli-phase TiO_2-x containing shear structure

Yoshiya Masato, Miyauchi Yohei, Tada Masahiro, Harada Shunta, Tanaka Katsushi, Yasuda Hideyuki, Inui Haruyuki

Preprints of Annual Meeting of The Ceramic Society of Japan<br>Preprints of Fall Meeting of The Ceramic Society of Japan　Vol. 2011　No. 0　p. 759-759　2011　Research paper (scientific journal)

Development of X-ray Imaging for Observing Solidification of Carbon Steels

Hideyuki Yasuda, Tomoya Nagira, Masato Yoshiya, Noriaki Nakatsuka, Akira Sugiyama, Kentaro Uesugi, Keiji Umetani

ISIJ INTERNATIONAL　Vol. 51　No. 3　p. 402-408　2011　Research paper (scientific journal)

Effect of impurity atoms on alpha(2)/gamma lamellar interfacial misfit in Ti-Al alloy: a systematic first principles study

Yuichiro Koizumi, Masato Yoshiya, Atsushi Sugihara, Yoritoshi Minamino

PHILOSOPHICAL MAGAZINE　Vol. 91　No. 28　p. 3685-3704　2011　Research paper (scientific journal)

Local Atomic Configuration of Dislocation-Accumulated Grain Boundary and Energetics of Gradual Transition from Low Angle to High Angle Grain Boundary in Pure Aluminum by First-Principles Calculations

M. Yoshiya, H. Yoshizu

Mater. Trans.　2010/12　Research paper (scientific journal)

Atomic structures and oxygen vacancy trapping at [001] symmetric tilt grain boundaries in barium titanate

T. Oyama, N. Wada, H. Takagi, M. Yoshiya

Proc. Comp. Eng. Conf　2010/12　Research paper (scientific journal)

Defect complex of trivalent dopant and resultant proton in BaZrO3 by first principles calculations with an aid of force-field calculations

Katsuhiro Nakano, Masato Yoshiya, Takahiro Okabayashi, Hideyuki Yasuda

2010/12　Research paper (international conference proceedings)

Local Phonon Thermal Conductivity in the Vicinity of sigma5(310)/[001] Symmetric Tilt Grain Boundary in ZrO2

Y. Koashi, M. Yoshiya, M. Tada, Y. Yoshizawa, H. Yasuda

2010/12　Research paper (international conference proceedings)

Mechanism of point defect formation in NaxCoO2 by first principle calculation with GGA+U

T. Okabayashi, M. Tada, M. Yoshiya

2010/12　Research paper (international conference proceedings)

Segregation of Trivalent Impurities and Resultant Ionic Conductivity at Σ5 (310)/[001] Symmetric Tilt Grain Boundary of ZrO2

Y. Yoshizawa, M. Yoshiya, H. Yasuda

2010/12　Research paper (international conference proceedings)

Phase Field Calculations of Domain Selection Following Order-Disorder Transition in FePd under External Field

N. Ueshima, M. Yoshiya, H. Yasuda

2010/12　Research paper (international conference proceedings)

Numerical Analyses on Realization of Low Thermal Conductivity without Degrading High Electronic Conductivity in Na0.5CoO2

M. Tada, M. Yoshiya, H. Yasuda

2010/12　Research paper (international conference proceedings)

フェーズフィールドモデルを用いたL10型強磁性体のバリアント選択に及ぼす外場の影響の解析

上島伸文, 吉矢真人, 安田秀幸

計算工学講演会論文集　2010/12　Research paper (scientific journal)

NaxCoO2におけるカチオン層の状態がフォノン熱伝導機構に及ぼす影響の解析

多田昌浩, 吉矢真人, 安田秀幸

計算工学講演会論文集　2010/12　Research paper (scientific journal)

GGA+U法を用いた第一原理計算によるNaxCoO2の点欠陥形成エネルギーと電子状態解析

岡林貴浩, 多田昌浩, 吉矢真人

計算工学講演会論文集　2010/12　Research paper (scientific journal)

格子静力学計算と第一原理計算によるBaZrO3のおける3価ドーパントの複合欠陥

中野勝啓, 吉矢真人, 安田秀幸, 桑原彰秀

計算工学講演会論文集　2010/12　Research paper (scientific journal)

Numerical Analyses of Effectiveness of Magnetic Field on Variant Selection in FePd by Phase Field Modeling

Nobufumi Ueshima, Masato Yoshiya, Hideyuki Yasuda

ISIJ Int　2010/12　Research paper (scientific journal)

Trapping of oxygen vacancy at grain boundary and its correlation with local atomic configuration and resultant excess energy in barium titanate: A systematic computational analysis

Takashi Oyama, Nobuyuki Wada, Hiroshi Takagi, Masato Yoshiya

PHYSICAL REVIEW B　Vol. 82　No. 13　2010/10　Research paper (scientific journal)

A First-Principles Study of the Role of Na Vacancies in the Thermoelectricity of Na (x) CoO2

Masato Yoshiya, Takahiro Okabayashi, Masahiro Tada, Craig A. J. Fisher

JOURNAL OF ELECTRONIC MATERIALS　Vol. 39　No. 9　p. 1681-1686　2010/09　Research paper (scientific journal)

凝固過程の可視化と磁場効果の機構解明

安田秀幸, 柳楽知也, 吉矢真人, 中塚憲章, 南雄大, 井上馨亮, 上島伸文, 杉山明, 上杉健太朗, 梅谷啓二

金属,　Vol. 6　p. 28-34　2010/07/02　Research paper (bulletin of university, research institution)

In-situ Observation of Solidification and its Application for Evaluation of Some Physical Properties

YASUDA Hideyuki, NAGIRA Tomoya, YOSHIYA Masato, SUGIYAMA Akira, UESUGI Kentaro, UMETANI Keiji

Journal of the Japanese Association for Crystal Growth　Vol. 37　No. 2　p. 82-87　2010/07/01　Research paper (other academic)

Selective dissolution of nanolamellar Ti-41 at.% Al alloy single crystals

Yuichiro Koizumi, Atsushi Sugihara, Hiroaki Tsuchiya, Yoritoshi Minamino, Shinji Fujimoto, Hideyuki Yasuda, Masato Yoshiya

ACTA MATERIALIA　Vol. 58　No. 8　p. 2876-2886　2010/05　Research paper (scientific journal)

Derivation of interatomic potentials from ab-initio calculations for molecular dynamics simulations of NaxCoO2

M. Tada, M. Yoshiya, H. Yasuda

Trans. Mater. Res. Soc. Jpn.　Vol. 35　No. 2　p. 205-208　2010/04　Research paper (scientific journal)

Effect of ionic radius and resultant two-dimensionality of phonons on thermal conductivity in MxCoO2 (M = Li, Na, K) by perturbed molecular dynamics

M. Tada, M. Yoshiya, H. Yasuda

J. Electron. Mater.　2010/04　Research paper (scientific journal)

Roles of Na vacancies on realization of thermoelectricity in NaxCoO2: A first principles study within generalized gradient approximation

M. Yoshiya, T. Okabayashi, M. Tada

J. Electron. Mater.　2010/04　Research paper (scientific journal)

Observation of dendrite growth and related phenomena in steels

H. Yasuda, T. Nagira, M. Yoshiya, A. Sugiyama, K. Uesugi, K. Umetani

Proc. 12th Japan-China Symposium on Science and Technology of Iron and Steel, (2010)　p. 143-147　2010　Research paper (international conference proceedings)

Direct Observation of Steel Solidification by X-ray Imaging; Some Examples

H. Yasuda, N. Nakatsuka, T. Nagira, M. Yoshiya, A. Sugiyama, K. Uesugi, K. Umetani

Proc. 6th Korea-Japan Workshop on Science and Technology in Iromaking and Steelmaking (2010)　p. 7-10　2010　Research paper (international conference proceedings)

Effect of convection on dendritic growth in undercooled melt

Y. Kanzawa, T. Fukuda, T. Nagira, M. Yoshiya, H. Yasuda

Proc. 4th Asian Workshop on Electromagnetic Processing of Materials, (2010)　p. 78-80　2010　Research paper (international conference proceedings)

Criterion of crystallographic alignment of TiB2 under a magnetic field

Y. Kimura, N. Nakatsuka, T. Nagira, M. Yoshiya, H. Yasuda

Proc. 4th Asian Workshop on Electromagnetic Processing of Materials, (2010)　p. 130-133　2010　Research paper (international conference proceedings)

In-situ observation of dendrite growth in Sn-Bi alloy under a magnetic field

Y. Minami, H. Yasuda, N. Nakatsuka, M. Yoshiya, T. Nagira, A. Sugiyama, K. Uesugi, K. Umetani

Proc. 4th Asian Workshop on Electromagnetic Processing of Materials, (2010)　p. 163-165　2010　Research paper (international conference proceedings)

In-situ observation of solidification for understanding EPM ? solidification under a static magnetic field-

H. Yasuda, T. Nagira, M. Yoshiya, Y. Minami, K. Inoue, N. Nakatsuka, A. Sugiyama, K. Uesugi, K. Umetani

Proc. 6th Japan-France EPM seminar on electromagnetic processing of materials ? Development of New Field and Applications (2010)　p. 45-40　2010　Research paper (international conference proceedings)

Theoretical study on the structure and energetics of intergranular glassy film in Si3N4-SiO2 ceramics

Masato Yoshiya, Isao Tanaka, Hirohiko Adachi, Rowland M. Cannon

International Journal of Materials Research　Vol. 101　No. 1　p. 57-65　2010　Research paper (scientific journal)

Regular structure formation of hypermonotectic Al-In alloys

H. Yasuda, S. Kato, T. Shinba, T. Nagira, M. Yoshiya, A. Sugiyama, K. Umetani, K. Uesugi

SOLIDIFICATION AND GRAVITY V　Vol. 649　p. 131-+　2010　Research paper (international conference proceedings)

Numerical analyses of effectiveness of magnetic field on variant selection in FePd by phase field modeling

Nobufumi Ueshima, Masato Yoshiya, Hideyuki Yasuda

ISIJ International　Vol. 50　No. 12　p. 1908-1913　2010　Research paper (international conference proceedings)

Local Atomic Configuration of Dislocation-Accumulated Grain Boundary and Energetics of Gradual Transition from Low Angle to High Angle Grain Boundary in Pure Aluminum by First-Principles Calculations

Masato Yoshiya, Hiroki Yoshizu

MATERIALS TRANSACTIONS　Vol. 51　No. 1　p. 51-57　2010/01　Research paper (scientific journal)

Theoretical study on the structure and energetics of intergranular glassy film in Si3N4-SiO2 ceramics

Masato Yoshiya, Isao Tanaka, Hirohiko Adachi, Rowland M. Cannon

INTERNATIONAL JOURNAL OF MATERIALS RESEARCH　Vol. 101　No. 1　p. 57-65　2010/01　Research paper (scientific journal)

The role of trace element segregation in the eutectic modification of hypoeutectic Al-Si alloys

K. Nogita, H. Yasuda, M. Yoshiya, S. D. McDonald, K. Uesugid, A. Takeuchi, Y. Suzuki

JOURNAL OF ALLOYS AND COMPOUNDS　Vol. 489　No. 2　p. 415-420　2010/01　Research paper (scientific journal)

Observation of the Segregation by using Time-resolved X-ray Imaging

H. Yasuda, Y. Yamamoto, N. Nakatsuka, M. Yoshiya, T. Nagira, A. Sugiyama, I. Ohnaka, K. Uesugi, K. Umetani

Modeling of Casting, Welding and Advanced Solidification Processes -XII　2009/12　Research paper (international conference proceedings)

X-ray imaging study on grain refinement due to dendrite fragmentation

H. Yasuda, N. Nakatsuka, T. Nagira, A. Sugiyama, M. Yoshiya, K. Uesugi, K.Umetani

Proc. 6th Electromagnetic Processing of Materials　2009/12　Research paper (international conference proceedings)

Crystallographical alignment of FeSi2 particles with orthorhombic symmetry under an oscillating magnetic field

N. Nakatsuka, H. Yasuda, T. Nagira, M. Yoshiya

Proc. 6th Electromagnetic Processing of Materials　2009/12　Research paper (international conference proceedings)

SPring-8におけるSn合金の凝固過程観察

安田秀幸, 野北和宏, C.M. Gourlay, 吉矢真人, 柳楽知也

溶接学会誌　Vol. 76　p. 5-9　2009/07/01　Research paper (bulletin of university, research institution)

In-situ observation of solidification phenomena in Al-Cu alloy and Fe-Si-Al alloy

H. Yasuda, Y. Yamamoto, N. Nakatsuka, M. Yoshiya, T. Nagira, A. Sugiyama, I. Ohnaka, K. Uesugi, K. Umetani

Int. J. Cast Met. Res.　2009/04　Research paper (scientific journal)

High Temperature Strength of the Al2O3-YAG Eutectic Composite Produced by using Transformation from Metastable Eutectic to Equilibrium Eutectic

T. Nagira, H. Yasuda, M. Yoshiya, T. Katou

Proc. 3rd International Conference of Processing Materials for Properties (PMP-III) (2009)　p. 977-982　2009　Research paper (international conference proceedings)

Three-dimensional alignment of FeSi2 with orthorhombic symmetry by an anisotropic magnetic field

Noriaki Nakatsuka, Hideyuki Yasuda, Tomoya Nagira, Masato Yoshiya

Journal of Physics: Conference Series　Vol. 165　2009　Research paper (international conference proceedings)

Crystal Growth in the Bulk-Metallic-Glass Zr-based Alloys by Using the DC plus AC Levitation Method

H. Yasuda, D. Nagamatsu, T. Yoshimoto, T. Nagira, M. Yoskiya, Y. Yokoyama, A. Inoue

13TH INTERNATIONAL CONFERENCE ON RAPIDLY QUENCHED AND METASTABLE MATERIALS　Vol. 144　2009　Research paper (international conference proceedings)

Formation and microstructure of Al2O3-YAG eutectic ceramics by phase transformation from metastable system to equilibrium system

Tomoya Nagira, Hideyuki Yasuda, Masato Yoshiya

Journal of Physics: Conference Series　Vol. 165　2009　Research paper (international conference proceedings)

Quantitative analyses of grain subdivision under severe plastic deformation by first-principles calculations

M. Yoshiya, H. Yoshizu

CD-ROM J. 21st Comp. Mech. Workshop,　2008/12　Research paper (scientific journal)

FePdの規則－不規則変態に及ぼす磁気エネルギー効果の解析

上島伸文, 吉矢真人, 安田秀幸

日本機会学会第２２回計算力学講演会CD-ROM論文集　2008/12　Research paper (scientific journal)

Design of Mold Materials with Excellent Releasability for IC Encapsulation Using Epoxy Compounds

S. Kitaoka, N. Kawashima, M. Yoshiya, K. Maeda, T. Kuno, Y. Noguchi

Proc. 2008 10th Electronics Packaging Technology Conference, IEEE　2008/12　Research paper (international conference proceedings)

Phase-Field法による強磁場下での粒配向機構の理解の試み

吉矢真人, 鹿谷俊之, 安田秀幸

2008/05　Research paper (other academic)

Challenge for Fabrication of Crystalline Lattice Consisting of Monodispersed TiO2 Particles by Means of Magnetic Field

A. Nakamura, H. Yasuda, T. Nagira, M. Yoshiya, S. Nishijima

Proc. 3rd Asian Workshop on Electromagnetic Processing of Materials　2008/04/01　Research paper (scientific journal)

Fundamental of Grain Refinement: Nucleation and Fragmentation

H. Yasuda, T. Nagira, M. Yoshiya

Proc 3rd Asian Workshop on Electromagnetic Processing of Materials　2008/04/01　Research paper (scientific journal)

Investigation of nucleation and growth of iron and steel by a levitation technique using alternating and static magnetic fields

H. Yasuda, T. Fukuda, T. Mizuguchi, T. Yoshimoto, T. Nagira, M. Yoshiya, M. Hanao, M. Kawamoto

Proc. 4th Int. Cong. on Sci. Tech. Steelmaking　2008/04/01　Research paper (scientific journal)

In-situ observation of nucleation, fragmentation and microstructure evolution

H. Yasuda, Y. Yamamoto, N. Nakatsuka, T. Nagira, M. Yoshiya, A. Sugiyama, I. Ohnaka, K. Umetani, K. Uesugi

Proc. 10th Asian Foundry Congress (AFC10)　Vol. 21　No. 1-4　p. 125-128　2008/04/01　Research paper (scientific journal)

Phase-field法を用いた, デンドライトのフラグメンテーションの定量解析

橋本康毅, 吉矢真人, 安田秀幸

日本機会学会第２１回計算力学講演会CD-ROM論文集　2008/04　Research paper (scientific journal)

第一原理計算による強加工によるGrain Subdivisionの定量解析

吉矢真人, 吉津広樹

日本機会学会第２１回計算力学講演会CD-ROM論文集　2008/04　Research paper (scientific journal)

Systematic Study of Al [001] Symmetric Tilt Grain Boundaries by First Principles Calculation

H. Yoshizu, M. Yoshiya

AMTC Lett.　2008/04/01　Research paper (scientific journal)

Analysis of point defect formation in NaxCoO2 by first principle calculation

T. Okabayashi, M. Tada, M. Yoshiya

2008/04　Research paper (scientific journal)

Effects of Na vacancies on phonon thermal conductivity of NaxCoO2: A perturbed molecular dynamics study

M. Tada, M. Yoshiya, T. Nagira, H. Yasuda

AMTC Lett.　2008/04/01　Research paper (scientific journal)

Oxide ion conduction at Grain boundary of M2O3 doped ZrO2 by molecular dynamics: A challenge to reduce grain boundary resistance

Y. Yoshizawa, K. Shimizu, M. Yoshiya

AMTC Lett.　2008/04/01　Research paper (scientific journal)

Oxide Ionic Conduction at Y2O3-segregated ZrO2 Grain Boundaries by Atomistic Simulation: Roles of Oxide Ion Vacancy

M. Yoshiya, K. Shimizu, T. Oyama

AMTC Lett.　2008/04/01　Research paper (scientific journal)

Molecular dynamics simulation of oxide ion conduction in M2O3 doped ZrO2

Y. Yoshizawa, K. Shimizu, M. Yoshiya

Proc. Conf. Comp. Eng. Sci.　2008/04/01　Research paper (scientific journal)

First principle calculations of various point defects formation in NaxCoO2

T. Okabayashi, M. Tada, M. Yoshiya

Proc. Conf. Comp. Eng. Sci.　2008/04/01　Research paper (scientific journal)

First principle study of local atomic configurations at Al [001] symmetric tilt grain boundaries

H. Yoshizu, M. Yoshiya

Proc. Conf. Comp. Eng. Sci.　2008/04/01　Research paper (scientific journal)

X-ray absorption near-edge structures of disordered Mg1-xZnxO solid solutions

Teruyasu Mizoguchi, Atsuto Seko, Masato Yoshiya, Hisao Yoshida, Tomoko Yoshida, W. Y. Ching, Isao Tanaka

PHYSICAL REVIEW B　Vol. 76　No. 19　2007/11　Research paper (scientific journal)

時間分解X線イメージングによる結晶成長過程の観察

安田秀幸, 山本洋介, 柳楽知也, 吉矢真人, 杉山明, 大中逸雄, 上杉健太郎, 梅谷啓二

まてりあ　2007/04/01　Research paper (other academic)

X線マイクロCTを利用したAl2O3-GAP共晶組織の3D構造観察

柳楽知也, 安田秀幸, 吉矢真人, 吉田健太郎, 上杉健太郎, 和久芳春

まてりあ　2007/04/01　Research paper (other academic)

Application of time-resolved X-ray imaging to the solidification behavior

Hideyuki Yasuda, Yosuke Yamamoto, Tomoya Nagira, Masato Yoshiya, Akira Sugiyama, Itsuo Ohnaka, Koichi Kawasaki, Keiji Umetani, Kantaro Uesugi

Proceedings of the 2nd Int. Symp. Adv. Fluid/Solid Sci. Tech. Exp. Mech.　2007/04/01　Research paper (scientific journal)

Al2O3-YAG equilibrium eutectic growth from the undercooled melt produced by melting Al2O3-YAP metastable eutectic

T. Nagira, H. Yasuda, M. Yoshiya, K. Uesugi

SP07 5th decennial international conference on Solidification Processing　2007/04/01　Research paper (scientific journal)

Time-resolved X-ray imaging of the dendritic and the monotectic solidification of Sn, Al and Cu-based alloy

H. Yasuda, T. Nagira, M. Yoshiya, A. Sugiyama, I. Ohnaka, M. Yoshiya, K.Kawasaki, K. Umetani, K. Uesugi

SP07 5th decennial international conference on Solidification Processing　2007/04/01　Research paper (scientific journal)

Thermal Conduction in NaCoO2 and Na0.5CoO2 by Perturbed Molecular Dynamics

M. Yoshiya, M. Tada, T. Nagira

Proceedings of International Symposium of Nano-Thermoelectrics　2007/04/01　Research paper (scientific journal)

Theoretical calculation of thermal conductivity of NaxCoO2 by perturbed molecular dynamics

M. Tada, M. Yoshiya, T. Nagira

Proc. Conf. Comp. Eng. Sci.　2007/04/01　Research paper (scientific journal)

Oxide Ion Diffusion in Perovskite-structured BaCoO3-δ and SrCoO3-δ: A Molecular Dynamics Study

C. A. J. Fisher, M. Yoshiya, Y. Iwamoto, J. Ishii, M. Asanuma, K. Yabuta

Solid State Ionics　2007/04/01　Research paper (scientific journal)

Melt flow on Solidified Structures of Middle Carbon Steel by Means of the AC + DC Levitation

H. Yasuda, T. Yoshimoto, T. Mizuguchi, Y. Tamura, T. Fukuda, T. Nagira, M. Yoshiya

Proc. 11th China-Japan Symp. on Iron and Steel Technology, (2007)　p. 143-147　2007　Research paper (international conference proceedings)

Oxide ion diffusion in perovskite-structured Ba1-xSrxCo1-yFeyO2.5: A molecular dynamics study

C. A. J. Fisher, M. Yoshiya, Y. Iwamoto, J. Ishii, M. Asanuma, K. Yabuta

SOLID STATE IONICS　Vol. 177　No. 39-40　p. 3425-3431　2007/01　Research paper (scientific journal)

Boron addition effects on aluminum nitride fabricated by radio-frequency plasma-assisted molecular beam epitaxy

Masashi Yamashita, Masato Yoshiya, Yukari Ishikawa, Hitoshi Hsato, Noriyoshi Shibata

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 4 NO 7 2007　Vol. 4　No. 7　p. 2486-+　2007　Research paper (international conference proceedings)

Effect of the melt flow on the solidified structure of middle carbon steel by means of the levitation method using alternating and static magnetic fields

Hideyuki Yasuda, Tsutomu Yoshimoto, Takuya Mizuguchi, Yuki Tamura, Tomoya Nagira, Masato Yoshiya

ISIJ INTERNATIONAL　Vol. 47　No. 4　p. 612-618　2007　Research paper (scientific journal)

Materials Designing for Novel Thermal Barrier Coatings through Calculating Thermal Conductivity by Atomistic Simulation

YOSHIYA Masato

Bulletin of the Japan Institute of Metals　Vol. 45　No. 9　p. 670-676　2006/04/01　Research paper (other academic)

Theoretical Calculation of Grain Boundary Segregation in Oxide Ceramics

M. Yoshiya, T. Oyama, K. Matsunaga

Proc. Comp. Eng. Conf.　2006/04/01　Research paper (scientific journal)

A new model of imprint mechanism in ferroelectric memory

H. Miyazawa, Y. Hamada, T. Higuchi, E. Natori, T. Kijima, T. Shimoda, M. Yoshiya, T. Oguchi

Mater. Res. Soc. Proc.　2006/04/01　Research paper (scientific journal)

Thermal conductivity of zirconia for thermal barrier coatings: A perturbed molecular dynamics study

Masato Yoshiya, Mineaki Matsumoto, Akihiko Harada, Munetaka Takeuchi, Hideaki Matsubara

SCIENCE OF ENGINEERING CERAMICS III　Vol. 317-318　p. 521-524　2006　Research paper (scientific journal)

Texture and microstructure of ZrO2-4mol% Y2O3 layers obliquely deposited by EB-PVD

K Wada, M Yoshiya, N Yamaguchi, H Matsubara

SURFACE & COATINGS TECHNOLOGY　Vol. 200　No. 8　p. 2725-2730　2006/01　Research paper (scientific journal)

Numerical analysis of solute segregation at Σ5 (310)/[001] symmetric tilt grain boundary in Y2O3-doped ZrO2

T. Oyama, M. Yoshiya, K. Matsunaga, H. Matsubara

Phys. Rev. B　Vol. 71　No. 22　2005/04/01　Research paper (scientific journal)

EB-PVD法によって合成したナノ構造ジルコニア膜の熱物性に及ぼす多層化の影響

張炳國, 吉矢真人, 松原秀彰

日本金属学会誌　Vol. 69　No. 1　p. 56-60　2005/04　Research paper (scientific journal)

摂動分子動力学法による純粋及びY2O3添加ZrO2における熱伝導度の異方性

吉矢真人, 松原秀彰

日本金属学会誌　2005/04　Research paper (scientific journal)

Influence of number of layers on thermal properties of nano-structured zirconia film fabricated by EB-PVD method

BK Jang, M Yoshiya, H Matsubara

JOURNAL OF THE JAPAN INSTITUTE OF METALS　Vol. 69　No. 1　p. 56-60　2005/01　Research paper (scientific journal)

Anisotropy of thermal conductivity in pure and Y2O3-doped ZrO2 by perturbed molecular dynamics

M Yoshiya, H Matsubara

JOURNAL OF THE JAPAN INSTITUTE OF METALS　Vol. 69　No. 1　p. 61-66　2005/01　Research paper (scientific journal)

Phase stability of BaCoyFe1-yO3-δ by first principles calculations

M. Yoshiya, C. A. J. Fisher, Y. Iwamoto, M. Asanuma, T. Anyashiki, K. Yabuta

2004/12　Research paper (scientific journal)

Computer simulation of nano-pore formation in EB-PVD thermal barrier coatings

M Yoshiya, K Wada, BK Jang, H Matsubara

SURFACE & COATINGS TECHNOLOGY　Vol. 187　No. 2-3　p. 399-407　2004/10　Research paper (scientific journal)

Direct observation of intergranular cracks in sintered silicon nitride

S Ii, C Iwamoto, K Matsunaga, T Yamamoto, M Yoshiya, Y Ikuhara

PHILOSOPHICAL MAGAZINE　Vol. 84　No. 25-26　p. 2767-2775　2004/09　Research paper (scientific journal)

Phase stability of BaCo1-yFeyO3-delta by first principles calculations

M Yoshiya, CAJ Fisher, Y Iwamoto, M Asanuma, J Ishii, K Yabuta

SOLID STATE IONICS　Vol. 172　No. 1-4　p. 159-163　2004/08　Research paper (scientific journal)

Perturbed Molecular Dynamics of Thermal Conductivity of Zirconia

M. Yoshiya, A. Harada, M. Takeuchi, H. Matsubara

Mol. Simulat.　Vol. 30　No. 13-15　p. 953-961　2004/04/01　Research paper (scientific journal)

First principles calculation of BaCoyFe1-yO3-δ: stabilization of perovskite structure

M. Yoshiya, C. A. J. Fisher, Y. Iwamoto, M. Asanuma, T. Anyashiki, K. Yabuta

Solid State Ionics　2004/04/01　Research paper (scientific journal)

Evaluation of thermal conductivity of zirconia coating layers deposited by EB-PVD

B. K. Jang, M. Yoshiya, N. Yamaguchi, H. Matsubara

Journal of Materials Science　Vol. 39　No. 5　p. 1823-1825　2004/03/01　Research paper (scientific journal)

Theoretical prediction of ELNES/XANES and chemical bondings of AlN polytypes

T Mizoguchi, Tanaka, I, M Kunisu, M Yoshiya, H Adachi, WY Ching

MICRON　Vol. 34　No. 3-5　p. 249-254　2003　Research paper (scientific journal)

Fracture and fatigue behavior at ambient and elevated temperatures of alumina bonded with copper/niobium/copper interlayers

J. J. Kruzic, R. A. Marks, M. Yoshiya, A. M. Glaeser, R. M. Cannon, R. O. Ritchie

Journal of the American Ceramic Society　Vol. 85　No. 10　p. 2531-2541　2002/10　Research paper (scientific journal)

Fracture and fatigue behavior at ambient and elevated temperatures of alumina bonded with copper/niobium/copper interlayers

JJ Kruzic, RA Marks, M Yoshiya, AM Glaeser, RM Cannon, RO Ritchie

JOURNAL OF THE AMERICAN CERAMIC SOCIETY　Vol. 85　No. 10　p. 2531-2541　2002/10　Research paper (scientific journal)

Atomic structures and bondings of beta- and spinel-Si6-zAlzOzN8-z by first-principles calculations

K Tatsumi, Tanaka, I, H Adachi, M Yoshiya

PHYSICAL REVIEW B　Vol. 66　No. 16　2002/10　Research paper (scientific journal)

Chemical bonding analysis of AIN polytypes by ELNES

Mizoguchi T, Kunisu M, Yoshiya M, Tanaka I, Adachi H, Rulis P, Ching W.Y

Microscopy and Microanalysis　Vol. 8　No. SUPPL. 2　p. 606-607　2002/06/24　Research paper (scientific journal)

Atomic structure of β-SiAlON by Al-K XANES

K. Tatsumi, T. Mizoguchi, S. Yoshioka, M. Kunisu, M. Yoshiya, I. Tanaka, H. Adachi

2002/04　Research paper (bulletin of university, research institution)

Theoretical study on the chemistry of intergranular glassy film in Si3N4-SiO2 ceramics

M. Yoshiya, I. Tanaka, H. Adachi

2002/04　Research paper (scientific journal)

First principles calculation of ELNES by LCAO methods

Tanaka, I, T Mizoguchi, M Yoshiya, K Ogasawara, H Adachi, SD Mo, WY Ching

JOURNAL OF ELECTRON MICROSCOPY　Vol. 51　p. S107-S112　2002/04/01　Research paper (scientific journal)

Theoretical prediction of the structure and properties of cubic spinel nitrides

WY Ching, SD Mo, LZ Ouyang, P Rulis, Tanaka, I, M Yoshiya

JOURNAL OF THE AMERICAN CERAMIC SOCIETY　Vol. 85　No. 1　p. 75-80　2002/01　Research paper (scientific journal)

Theoretical study on the chemistry of intergranular glassy film in Si(3)N(4)-SiO(2) ceramics

M Yoshiya, K Tatsumi, Tanaka, I, H Adachi

JOURNAL OF THE AMERICAN CERAMIC SOCIETY　Vol. 85　No. 1　p. 109-112　2002/01　Research paper (scientific journal)

Mg-K edge absorption study of MgO-ZnO solid solutions

T. Mizoguchi, K. Tatsumi, M. Nakano, F. Oba, M. Yoshiya, H. Adachi, I. Tanaka, T. Yoshida, H. Yoshida, S.-D. Mo, W.-Y. Ching

2001/04　Research paper (bulletin of university, research institution)

Zn-L2,3 edge absorption study on six-fold coordinated Zn in MgO

I. Tanaka, T. Mizoguchi, K. Tatsumi, M. Nakano, F. Oba, M. Yoshiya, H. Adachi, T. Yoshida, H. Yoshida

2001/04　Research paper (bulletin of university, research institution)

Analysis of Zn in MgO-ZnO solid solution using XANES and the first-principles calculations

T. Mizoguchi, M. Yoshiya, I. Tanaka, H. Adachi, S-Di Mo, W. Y. Ching, T. Yoshida, H. Yoshida

Proceedings of the 7th International Symposium on Advanced Physical Fields　2001/04/01　Research paper (scientific journal)

Local structural analysis around Zn in MgO-ZnO solid solution using X-ray absorption spectroscopy

T. Mizoguchi, M. Yoshiya, I. Tanaka, H. Adachi, S-D. Mo, W. Y. Ching, T. Yoshida, H. Yoshida

2001/04　Research paper (scientific journal)

Cubic silicon nitride with spinel structure: A novel material

TANAKA Isao, OBA Fumiyasu, YOSHIYA Masato, TATSUMI Kazuyoshi, CHING Wai Yim

OYOBUTURI　Vol. 70　No. 12　p. 1442-1446　2001/04/01　Research paper (scientific journal)

新しいスピネル型窒化物の材料設計

田中 功, 大場 文康, 吉矢 真人, W.Y. Ching

マテリアル インテグレーション　2001/04/01　Research paper (scientific journal)

Prediction of spinel structure and properties of single and double nitrides

WY Ching, SD Mo, Tanaka, I, M Yoshiya

PHYSICAL REVIEW B　Vol. 63　No. 6　2001/02/01　Research paper (scientific journal)

Electron-energy-loss near edge structures of six-fold-coordinated Zn in MgO

Mizoguchi T, Yoshiya M, Li J, Oba F, Tanaka I, Adachi H

ULTRAMICROSCOPY　Vol. 86　No. 3-4　p. 363-370　2001/02　Research paper (scientific journal)

Prediction of spinel structure and properties of single and double nitrides

W. Y. Ching, Shang-Di Mo, Isao Tanaka, Masato Yoshiya

Physical Review B - Condensed Matter and Materials Physics　Vol. 63　No. 6　p. 641021-641024　2001　Research paper (scientific journal)

Electron-energy-loss near edge structures of six-fold-coordinated Zn in MgO

Teruyasu Mizoguchi, Masato Yoshiya, Jiang Li, Fumiyasu Oba, Isao Tanaka, Hirohiko Adach

Ultramicroscopy　Vol. 86　No. 3-4　p. 363-370　2001　Research paper (scientific journal)

Local structural analysis around Zn in MgO-ZnO solid solution using X-ray absorption spectroscopy

T Mizoguchi, M Yoshiya, Tanaka, I, H Adachi, SD Mo, WY Ching, T Yoshida, H Yoshida

PRICM 4: FORTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, VOLS I AND II　p. 551-553　2001　Research paper (international conference proceedings)

Energetical role of modeled intergranular glassy film in Si(3)N(4)-SiO(2) ceramics

M Yoshiya, Tanaka, I, H Adachi

ACTA MATERIALIA　Vol. 48　No. 18-19　p. 4641-4645　2000/12　Research paper (scientific journal)

Theoretical calculation of B-K ELNES (electron energy loss near edge structure) from 3d transition metal-boron systems

K Tatsumi, T Mizoguchi, M Yoshiya, Tanaka, I, H Adachi

JOURNAL OF THE JAPAN INSTITUTE OF METALS　Vol. 64　No. 7　p. 527-534　2000/07　Research paper (scientific journal)

Prediction of the new spinel phase of Ti3N4, and SiTi2N4 and the metal-insulator transition

Ching WY, Mo SD, Ouyang L, Tanaka I, Yoshiya M

PHYSICAL REVIEW B　Vol. 61　No. 16　p. 10609-10614　2000/04/15　Research paper (scientific journal)

Theoretical calculations to interpret electron spectra from transmission electron microscopy

TANAKA Isao, MIZOGUCHI Teruyasu, YOSHIYA Masato, IWATA Takahiro, OGASAWARA Kazuyoshi, ADACHI Hirohiko

kenbikyo　Vol. 35　No. 3　p. 221-229　2000/04　Research paper (scientific journal)

Correlation between local atomic coordination and interface energy in intergranular glassy film of Si3N4 ceramics

M. Yoshiya, K. Tatsumi, I. Tanaka, H. Adachi

Proceedings of 10th Iketani Conference on Materials Research Toward The 21st Century　2000/04/01　Research paper (scientific journal)

Systematic change of the ELNES spectral shapes from 3d transition metal-borides

K. Tatsumi, T. Mizoguchi, M. Yoshiya, I. Tanaka, H. Adachi

Bull. Soc. DV-Xα　2000/04/01　Research paper (scientific journal)

Local structural analysis around Si in MgO by ELNES

T. Mizoguchi, M. Yoshiya, I. Tanaka, H. Adachi

Bull. Soc. DV-Xα　2000/04/01　Research paper (scientific journal)

3d遷移金属-ホウ素系におけるB - K励起端ELNES（電子線エネルギー損失分光励起端近傍微細構造）の理論計算

巽一厳, 溝口照康, 吉矢真人, 田中功, 足立裕彦

日本金属学会誌　2000/04　Research paper (scientific journal)

Intergranular glassy film in Si3N4-SiO2 ceramics - morphology, chemistry, atomic structure and energetics

I. Tanaka, M. Yoshiya, S.R. Nishitani, H. Adachi

Ceram. Trans.　Vol. 175-1　p. 107-118　2000/04/01　Research paper (scientific journal)

Energetical role of modeled intergranular glassy film in Si3N4-SiO2 ceramics

M. Yoshiya, I. Tanaka, H. Adachi

Acta Mater.　Vol. 118　p. 453-460　2000/04/01　Research paper (scientific journal)

Core-hole effects on theoretical ELNES/NEXAFS of MgO

T. Mizoguchi, I. Tanaka, M. Yoshiya, F. Oba, K. Ogasawara, H. Adachi

Phys. Rev. B　2000/04/01　Research paper (scientific journal)

Prediction of the new spinel phase of Ti3N4, and SiTi2N4 and the metal-insulator transition

WY Ching, SD Mo, L Ouyang, Tanaka, I, M Yoshiya

PHYSICAL REVIEW B　Vol. 61　No. 16　p. 10609-10614　2000/04　Research paper (scientific journal)

Intergranular glassy films in Si3N4-SiO2 ceramics: Morphology, chemistry, atomic structure and energetics

GRAIN BOUNDARY ENGINEERING IN CERAMICS - FROM GRAIN BOUNDARY PHENOMENA TO GRAIN BOUNDARY QUANTUM STRUCTURES　Vol. 118　p. 445-452　2000/04/01　Research paper (scientific journal)

Core-hole effects on theoretical electron-energy-loss near-edge structure and near edge x-ray absorption fine structure of MgO

T Mizoguchi, Tanaka, I, M Yoshiya, F Oba, K Ogasawara, H Adachi

PHYSICAL REVIEW B　Vol. 61　No. 3　p. 2180-2187　2000/01　Research paper (scientific journal)

Interpretation of Si-L-2,L-3 edge electron energy loss near edge structures (ELNES) from intergranular glassy film of Si3N4 ceramics

M Yoshiya, H Adachi, Tanaka, I

JOURNAL OF THE AMERICAN CERAMIC SOCIETY　Vol. 82　No. 11　p. 3231-3236　1999/11　Research paper (scientific journal)

First-principles calculations of electron-energy-loss near-edge structure and near-edge x-ray-absorption fine structure of BN polytypes using model clusters

Tanaka, I, H Araki, M Yoshiya, T Mizoguchi, K Ogasawara, H Adachi

PHYSICAL REVIEW B　Vol. 60　No. 7　p. 4944-4951　1999/08　Research paper (scientific journal)

Chemical Bonding of intergranular amorphous layers in high-purity β-SiC ceramics

K. Kaneko, J. Yuan, M. Yoshiya, I. Tanaka

1999/04　Research paper (scientific journal)

Theoretical calculation of oxygen K electron-energy-loss near-edge structures of Si-doped MgO

T. Mizoguchi, I. Tanaka, M. Yoshiya, F. Oba, H. Adachi

J. Phys.: Condens. Matter　1999/04/01　Research paper (scientific journal)

Atomic structure and chemical bondings of intergranular glassy film in Si3N4-SiO2 ceramics

M. Yoshiya, I. Tanaka, H. Adachi

1999/04　Research paper (scientific journal)

First-principles calculations of ELNES/NEXAFS of BN polytypes using model clusters

I. Tanaka, H. Araki, M. Yoshiya, T. Mizoguchi, K. Ogasawara, H. Adachi

Phys. Rev B　1999/04/01　Research paper (scientific journal)

Interpretation of Si-L2,3 edge electron energy loss near edge structures (ELNES) from intergranular glassy film of Si3N4 ceramics

M. Yoshiya, I. Tanaka, H. Adachi

1999/04　Research paper (scientific journal)

First principles calculations of chemical shifts in ELNES/NEXAFS of titanium oxides

M. Yoshiya, I. Tanaka, K. Kaneko, H. Adachi

J. Phys.: Condens. Matter　Vol. 11　No. 16　p. 3217-3228　1999/04/01　Research paper (scientific journal)

Chemical bonding of intergranular amorphous layers in high-purity beta-SiC ceramics

Kaneko K, Yuan J, Yoshiya M, Tanaka I

ELECTRON MICROSCOPY AND ANALYSIS 1999　No. 161　p. 59-62　1999/04　Research paper (scientific journal)

Chemical bonding of oxygen in intergranular amorphous layers in high-purity beta-SiC ceramics

K Kaneko, M Yoshiya, Tanaka, I, S Tsurekawa

ACTA MATERIALIA　Vol. 47　No. 4　p. 1281-1287　1999/03　Research paper (scientific journal)

Structural study of thin amorphous SiO2 and Si3N4 films by the grazing incidence X-ray scattering (GIXS) method

S Sato, R Kakiuchi, M Yoshiya, E Matsubara, M Saito, Y Waseda, S Takayama

HIGH TEMPERATURE MATERIALS AND PROCESSES　Vol. 18　No. 1-2　p. 99-107　1999/01　Research paper (scientific journal)

Cluster calculation of oxygen K-edge electron-energy-loss near-edge structure of NiO

Phys. Rev. B　1998/12/01　Research paper (scientific journal)

Fluorescent spectroscopy of mineral and material samples

C.M. MacRae, I.R. Harrowfield, N. Wilson, M. Yoshiya, P. Fazey, S. Peacock, L. De Yong, H. Adachi

Microsco. Microanal.　1998/04/01　Research paper (scientific journal)

Six-fold coordinated silicon at grain boundaries in sintered alpha-Al2O3

K Kaneko, Tanaka, I, M Yoshiya

APPLIED PHYSICS LETTERS　Vol. 72　No. 2　p. 191-193　1998/01　Research paper (scientific journal)

Fabrication of Bulk β-FeSi2 Crystal With Three-Dimensional Alignment by an Oscillating Magnetic Field

N. Nakatsuka, K. Kurokawa, T. Nagira, M. Yoshiya, H. Yasuda

J. Iron Steel Res. Int.,　Vol. 19S　p. 183-186　1905/07/04　Research paper (international conference proceedings)