顔写真

PHOTO

Nishi Masayuki
西　真之
Nishi Masayuki
西　真之
Institutional repository
Graduate School of Science　Department of Earth and Space Science，Associate Professor
Institutional repository

Research History 5

  1. 2021/03 - Present
    Osaka University　Graduate School of Science

  2. 2020/04 - 2021/03
    Ehime University　Institute for Promotion of Science and Technology Geodynamics Research Center

  3. 2013/10 - 2021/03
    Tokyo Institute of Technology　Earth-Life Science Institute

  4. 2017/09 - 2020/03
    Ehime University　Institute for Promotion of Science and Technology Geodynamics Research Center

  5. 2014/09 - 2017/08
    Ehime University　Geodynamics Research Center　Assistant Professor

Professional Memberships 5

  1. American Geophysical Union

  2. JAPAN GEOSCIENCE UNION

  3. 応用物理学会

  4. THE JAPAN SOCIETY OF HIGH PRESSURE SCIENCE AND TECHNOLOGY

  5. Japan Association of Mineralogical Sciences

Research Areas 1

  1. Natural sciences / Solid earth science /

Awards 3

  1. 奨励賞

    西 真之　日本高圧力学会　2014/11

  2. Scientist Presentation Award (The GL-GRC Inter-Institutional Science Symposium)

    2011/09

  3. 論文賞

    西 真之　日本鉱物学科学会　2011/09

Papers 41

  1. (査読中) topic: hydrous–anhydrous mineral reactions and deep-mantle hydration

    M. Nishi, K. Takahashi et al.

    Nature Geoscience, under peer review.　2026/04

  2. Extensive iron–water exchange at Earth’s core–mantle boundary can explain seismic anomalies

    Katsutoshi Kawano, Masayuki Nishi, Hideharu Kuwahara, Sho Kakizawa, Toru Inoue, Tadashi Kondo

    Nature Communications　2024/10/15　Research paper (scientific journal)

  3. Effect of grain size on amorphization mechanism and kinetics of bridgmanite in shocked meteorites

    Masayuki Nishi, Si Jin, Katsutoshi Kawano, Hideharu Kuwahara, Akihiro Yamada, Shogo Kawaguchi, Yuki Mori, Tatsuhiro Sakaiya, Tadashi Kondo

    Progress in Earth and Planetary Science　Vol. 10　No. 1　2023/07/27　Research paper (scientific journal)

    Publisher: Springer Science and Business Media LLC

  4. Bridgmanite Freezing in Shocked Meteorites Due To Amorphization‐Induced Stress

    M. Nishi, A. Kaneko, H. Ohgidani, H. Dekura, S. Kakizawa, S. Kawaguchi, S. Kobayashi, T. Sakaiya, T. Kondo

    Geophysical Research Letters　Vol. 49　No. 13　2022/07/16　Research paper (scientific journal)

    Publisher: American Geophysical Union ({AGU})

  5. Chemical Reaction Between Metallic Iron and a Limited Water Supply Under Pressure: Implications for Water Behavior at the Core‐Mantle Boundary

    M. Nishi, Y. Kuwayama, T. Hatakeyama, S. Kawaguchi, N. Hirao, Y. Ohishi, T. Irifune

    Geophysical Research Letters　Vol. 47　No. 19　2020/10/16　Research paper (scientific journal)

    Publisher: American Geophysical Union ({AGU})

  6. New aluminium hydroxide at multimegabar pressures: Implications for water reservoirs in deep planetary interiors

    Masayuki Nishi, Yasuhiro Kuwayama, Jun Tsuchiya

    Icarus　Vol. 338　2020/03　Research paper (scientific journal)

    Publisher: Elsevier {BV}

  7. Water transport into the deep mantle by hydrous phases

    Masayuki Nishi

    Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu　Vol. 30　No. 2　p. 95-101　2020　Research paper (scientific journal)

  8. Solid Solution and Compression Behavior of Hydroxides in the Lower Mantle

    M. Nishi, J. Tsuchiya, Y. Kuwayama, T. Arimoto, Y. Tange, Y. Higo, T. Hatakeyama, T. Irifune

    Journal of Geophysical Research: Solid Earth　Vol. 124　No. 10　p. 10231-10239　2019/10/24　Research paper (scientific journal)

    Publisher: American Geophysical Union ({AGU})

  9. High-pressure phase transitions of anorthosite crust in the Earth's deep mantle

    Nishi Masayuki, Greaux Steeve, Tateno Shigehiko, Kuwayama Yasuhiro, Kawai Kenji, Trifune Tetsuo, Maruyama Shigenori

    GEOSCIENCE FRONTIERS　Vol. 9　No. 6　p. 1859-1870　2018/11　Research paper (scientific journal)

  10. Thermal equation of state of MgSiO<inf>4</inf>H<inf>2</inf>phase H determined by in situ X-ray diffraction and a multianvil apparatus

    Nishi, M., Tsuchiya, J., Arimoto, T., Kakizawa, S., Kunimoto, T., Tange, Y., Higo, Y., Irifune, T.

    Physics and Chemistry of Minerals　p. 1-7　2018　Research paper (scientific journal)

  11. The pyrite-Type high-pressure form of FeOOH

    Nishi, M., Kuwayama, Y., Tsuchiya, J., Tsuchiya, T.

    Nature　Vol. 547　No. 7662　p. 205-208　2017　Research paper (scientific journal)

  12. Phase transitions of serpentine in the lower mantle

    M. Nishi, T. Irifune, S. Greaux, Y. Tange, Y. Higo

    PHYSICS OF THE EARTH AND PLANETARY INTERIORS　Vol. 245　p. 52-58　2015/08　Research paper (scientific journal)

  13. Diffusion controlled reaction rim growth and metastable transformation of minerals in the lower mantle

    Masayuki Nishi

    Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu　Vol. 25　No. 2　p. 172-180　2015　Research paper (scientific journal)

    Publisher: Japan Society of High Pressure Science and Technology

  14. Metastable phase relations in the mantle transition region

    Masayuki Nishi

    Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu　Vol. 24　No. 2　p. 136-144　2014　Research paper (scientific journal)

  15. Stability of hydrous silicate at high pressures and water transport to the deep lower mantle

    Nishi, M., Irifune, T., Tsuchiya, J., Tange, Y., Nishihara, Y., Fujino, K., Higo, Y.

    Nature Geoscience　Vol. 7　No. 3　p. 224-227　2014　Research paper (scientific journal)

  16. Growth kinetics of MgSiO3 perovskite reaction rim between stishovite and periclase up to 50 GPa and its implication for grain boundary diffusivity in the lower mantle

    Masayuki Nishi, Yu Nishihara, Tetsuo Irifune

    EARTH AND PLANETARY SCIENCE LETTERS　Vol. 377　p. 191-198　2013/09　Research paper (scientific journal)

  17. Slow Si-Al interdiffusion in garnet and stagnation of subducting slabs

    Masayuki Nishi, Tomoaki Kubo, Hiroaki Ohfuji, Takumi Kato, Yu Nishihara, Tetsuo Irifune

    EARTH AND PLANETARY SCIENCE LETTERS　Vol. 361　p. 44-49　2013/01　Research paper (scientific journal)

  18. Intracrystalline nucleation during the post-garnet transformation under large overpressure conditions in deep subducting slabs

    Masayuki Nishi, Tetsuo Irifune, Hiroaki Ohfuji, Yoshinori Tange

    GEOPHYSICAL RESEARCH LETTERS　Vol. 39　2012/12　Research paper (scientific journal)

  19. Exsolution kinetics of majoritic garnet from clinopyroxene in subducting oceanic crust

    Masayuki Nishi, Tomoaki Kubo, Takumi Kato, Aiko Tominaga, Ken-ichi Funakoshi, Yuji Higo

    PHYSICS OF THE EARTH AND PLANETARY INTERIORS　Vol. 189　No. 1-2　p. 47-55　2011/11　Research paper (scientific journal)

  20. Survival of majoritic garnet in diamond by direct kimberlite ascent from deep mantle

    Masayuki Nishi, Tomoaki Kubo, Takumi Kato, Aiko Tominaga, Akira Shimojuku, Naoko Doi, Ken-ichi Funakoshi, Yuji Higo

    GEOPHYSICAL RESEARCH LETTERS　Vol. 37　2010/05　Research paper (scientific journal)

  21. Metastable transformations of eclogite to garnetite in subducting oceanic crust

    Masayuki Nishi, Tomoaki Kubo, Takumi Kato

    JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES　Vol. 104　No. 3　p. 192-198　2009/06　Research paper (scientific journal)

  22. Survival of pyropic garnet in subducting plates

    Masayuki Nishi, Takumi Kato, Tomoaki Kubo, Takumi Kikegawa

    PHYSICS OF THE EARTH AND PLANETARY INTERIORS　Vol. 170　No. 3-4　p. 274-280　2008/11　Research paper (scientific journal)

  23. Limited stability of hydrous SiO<inf>2</inf> stishovite in the deep mantle

    Goru Takaichi, Yu Nishihara, Kyoko N. Matsukage, Masayuki Nishi, Yuji Higo, Yoshinori Tange, Noriyoshi Tsujino, Sho Kakizawa

    Earth and Planetary Science Letters　Vol. 640　2024/08/15　Research paper (scientific journal)

  24. High-temperature phase relations of hydrous aluminosilicates at 22 GPa in the AlOOH-AlSiO3OH system

    Goru Takaichi, Masayuki Nishi, Youmo Zhou, Shinichi Machida, Ginga Kitahara, Akira Yoshiasa, Tetsuo Irifune

    American Mineralogist　2022/08/01　Research paper (scientific journal)

    Publisher: Mineralogical Society of America

  25. Bridgmanite Amorphization Observed by Time-Resolved in-situ High-Temperature Synchrotron X-ray Diffraction Measurements

    西真之

    日本結晶学会誌　Vol. 64　No. 4　2022

  26. Monoclinic semimetal IrSi synthesized under high pressure above 25 GPa: Crystal structure, electronic, and magnetic properties

    Y. Fujishiro, N. Kanazawa, T. Shinmei, M. Nishi, T. Nakajima, T. Arima, D. Hashizume, M. S. Bahramy, T. Irifune, Y. Tokura

    Physical Review Materials　Vol. 4　No. 5　2020/05　Research paper (scientific journal)

  27. Solubility behavior of δ-AlOOH and ϵ-FeOOH at high pressures

    Chaowen Xu, Masayuki Nishi, Toru Inoue

    American Mineralogist　Vol. 104　p. 1416-1420　2019/10/25

  28. Phase relations of MgSiO<inf>3</inf>-FeSiO<inf>3</inf> system up to 64 GPa and 2300 K using multianvil apparatus with sintered diamond anvils

    Takeshi Arimoto, Tetsuo Irifune, Masayuki Nishi, Yoshinori Tange, Takehiro Kunimoto, Zhaodong Liu

    Physics of the Earth and Planetary Interiors　Vol. 295　2019/10　Research paper (scientific journal)

  29. High-pressure phase relation of KREEP basalts: A clue for finding the lost Hadean crust?

    Steeve Gréaux, Masayuki Nishi, Shigehiko Tateno, Yasuhiro Kuwayama, Naohisa Hirao, Kenji Kawai, Shigenori Maruyama, Tetsuo Irifune

    Physics of the Earth and Planetary Interiors　Vol. 274　p. 184-194　2018/01/01　Research paper (scientific journal)

  30. Phase Relations in the System MgSiO3-Al2O3 up to 2300K at Lower Mantle Pressures

    Zhaodong Liu, Masayuki Nishi, Takayuki Ishii, Hongzhan Fei, Nobuyoshi Miyajima, Tiziana Boffa Ballaran, Hiroaki Ohfuji, Takeshi Sakai, Lin Wang, Svyatoslav Shcheka, Takeshi Arimoto, Yoshinori Tange, Yuji Higo, Tetsuo Irifune, Tomoo Katsura

    JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　Vol. 122　No. 10　p. 7775-7788　2017/10　Research paper (scientific journal)

  31. Melting temperatures of MgO under high pressure by micro-texture analysis

    T. Kimura, H. Ohfuji, M. Nishi, T. Irifune

    NATURE COMMUNICATIONS　Vol. 8　2017/06　Research paper (scientific journal)

  32. Phase relations in the system MgSiO3-Al2O3 up to 52 GPa and 2000 K

    Zhaodong Liu, Tetsuo Irifune, Masayuki Nishi, Yoshinori Tange, Takeshi Arimoto, Toru Shinmei

    PHYSICS OF THE EARTH AND PLANETARY INTERIORS　Vol. 257　p. 18-27　2016/08　Research paper (scientific journal)

  33. Growth kinetics of forsterite reaction rims at high-pressure

    Yu Nishihara, Genta Maruyama, Masayuki Nishi

    PHYSICS OF THE EARTH AND PLANETARY INTERIORS　Vol. 257　p. 220-229　2016/08　Research paper (scientific journal)

  34. Partition of Al between Phase D and Phase H at high pressure: Results from a simultaneous structure refinement of the two phases coexisting in a unique grain

    Luca Bindi, Masayuki Nishi, Tetsuo Irifune

    AMERICAN MINERALOGIST　Vol. 100　No. 7　p. 1637-1640　2015/07　Research paper (scientific journal)

  35. In situ observation of crystallographic preferred orientation of deforming olivine at high pressure and high temperature

    Tomohiro Ohuchi, Yu Nishihara, Yusuke Seto, Takaaki Kawazoe, Masayuki Nishi, Genta Maruyama, Mika Hashimoto, Yuji Higo, Ken-ichi Funakoshi, Akio Suzuki, Takumi Kikegawa, Tetsuo Irifune

    PHYSICS OF THE EARTH AND PLANETARY INTERIORS　Vol. 243　p. 1-21　2015/06　Research paper (scientific journal)

  36. Letter. Crystal chemistry of dense hydrous magnesium silicates: The structure of phase H, MgSiH<inf>2</inf>O<inf>4</inf>, synthesized at 45 GPa and 1000 °c Bindi Luca luca.bindi@unifi.it

    Bindi, L., Nishi, M., Tsuchiya, J., Irifune, T.

    American Mineralogist　Vol. 99　No. 8-9　p. 1802-1805　2014　Research paper (scientific journal)

  37. Effects of pressure and temperature on the silicon diffusivity of pyrope-rich garnet

    Akira Shimojuku, Tomoaki Kubo, Takumi Kato, Takashi Yoshino, Masayuki Nishi, Tomoki Nakamura, Ryuji Okazaki, Yuki Kakazu

    PHYSICS OF THE EARTH AND PLANETARY INTERIORS　Vol. 226　p. 28-38　2014/01　Research paper (scientific journal)

  38. Effect of iron content on electrical conductivity of ferropericlase with implications for the spin transition pressure

    Takashi Yoshino, Eiji Ito, Tomoo Katsura, Daisuke Yamazaki, Shuanming Shan, Xinzhuan Guo, Masayuki Nishi, Yuji Higo, Ken-ichi Funakoshi

    JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　Vol. 116　2011/04　Research paper (scientific journal)

  39. Preliminary reports on in-situ X-ray observation of "post-perovskite" in CaRuO3

    D. Yamazaki, E. Ito, T. Yoshino, X-G Guo, S. Shun, M. Nishi, Y. Higo, K. Funakoshi

    INTERNATIONAL CONFERENCE ON HIGH PRESSURE SCIENCE AND TECHNOLOGY, JOINT AIRAPT-22 AND HPCJ-50　Vol. 215　2010　Research paper (international conference proceedings)

  40. Plagioclase breakdown as an indicator for shock conditions of meteorites

    Tomoaki Kubo, Makoto Kimura, Takumi Kato, Masayuki Nishi, Aiko Tominaga, Takumi Kikegawa, Ken-ichi Funakoshi

    NATURE GEOSCIENCE　Vol. 3　No. 1　p. 41-45　2010/01　Research paper (scientific journal)

  41. Electrical conductivity of majorite garnet and its implications for electrical structure in the mantle transition zone

    Takashi Yoshino, Masayuki Nishi, Takuya Matsuzaki, Daisuke Yamazaki, Tomoo Katsura

    PHYSICS OF THE EARTH AND PLANETARY INTERIORS　Vol. 170　No. 3-4　p. 193-200　2008/11　Research paper (scientific journal)

Misc. 8

  1. Phase transition of aluminium hydroxide at extremely high pressure

    Masayuki Nishi

    SPring-8/SACLA Research Frontiers 2020　p. 100-101　2021　Article, review, commentary, editorial, etc. (bulletin of university, research institution)

  2. The pyrite-type high-pressure form of FeOOH

    NISHI Masayuki

    SPring-8 Research Frontiers 2017　p. 80-81　2018

  3. Transportation of water into the deep lower mantle by new type of dense hydrous magnesium silicate

    NISHI Masayuki

    SPring-8 Research Frontiers 2014　p. 80-81　2015　Article, review, commentary, editorial, etc. (bulletin of university, research institution)

  4. DEEP WATER CYCLE Mantle hydration

    Masayuki Nishi

    NATURE GEOSCIENCE　Vol. 8　No. 1　p. 9-10　2015/01　Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)

  5. Back transformation kinetics of majoritic garnet and implication for ascending rate of diamond

    NISHI Masayuki

    SPring-8 Research Frontiers 2010　p. 114-115　2011　Article, review, commentary, editorial, etc. (bulletin of university, research institution)

  6. Earth and Planetary Material Science Laboratory, Department of Earth and Planetary Sciences, Graduate School of Sciences, Kyushu University

    TOMINAGA Aiko, NISHI Masayuki

    Vol. 17　No. 4　p. 357-358　2007/11/20

  7. Experimental constraints on P-T-t conditions for plagioclase amorphization and crystallization of high-pressure phases : Implications for shocked meteorites

    KUBO T, KIMURA M, NISHI M, TOMINAGA A, KATO T, KIKEGAWA T, FUNAKOSHI K

    Vol. 2007　p. 75-75　2007/09/22

  8. Experimental investigation on the kinetics of the pyroxene-garnet transformation using an in-situ X-ray diffraction method

    NISHI Masayuki

    Photon Factory Activity Report 2006 #24 Part A　p. 31-33　2007　Article, review, commentary, editorial, etc. (bulletin of university, research institution)

Publications 1

  1. 図説地球科学の事典

    鳥海, 光弘 他

    朝倉書店　2018/04

    ISBN: 9784254160727

Institutional Repository 1

Content Published in the University of Osaka Institutional Repository (OUKA)

  1. Extensive iron–water exchange at Earth’s core–mantle boundary can explain seismic anomalies

    Kawano Katsutoshi, Nishi Masayuki, Kuwahara Hideharu, Kakizawa Sho, Inoue Toru, Kondo Tadashi

    Nature Communications　Vol. 15　2024/10/15