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J-GLOBAL ID：202301000788151096   Update date: Mar. 20, 2025

Ishii Takayuki

イシイ タカユキ | Ishii Takayuki
Affiliation and department：
Okayama University The Institute for Planetary Materials

About Okayama University The Institute for Planetary Materials


Job title： Associate Professor
Research field  (1)： Biogeoscience
Research keywords  (6)： high pressure-temperature phase relations ,  crystal chemistry ,  high-pressure phase transition ,  Kawai-type multi-anvil high-pressure apparatus ,  mantle ,  high pressure experiment
Research theme for competitive and other funds  (12)：
  • 2024 - 2028 Precise determination of phase relations of hydrous peridotite up to lower mantle conditions and clarification of water distribution in the mantle
  • 2024 - 2028 Measurement of sound velocity and equation of state of iron alloys at ultrahigh pressure and high temperature and application to the inner core heterogeneity
  • 2024 - 2027 沈み込み帯での脱水作用におけるスラブ物質内の含水鉱物消長の実験的研究
  • 2024 - 2026 下部マントル条件における立方晶カルシウムペロブスカイトの弾性波速度と単結晶弾性
  • 2021 - 2026 Experimental study on deep mantle by Kawai-type multianvil press
Show all
Papers (77)：
  • Takayuki Ishii, Jintao Zhu, Eiji Ohtani. Limited water contents of wadsleyite and ringwoodite coexisting with hydrous minerals in cold subducting slabs. Earth and Planetary Science Letters. 2025
  • Wen-Pin Hsieh, Takayuki Ishii, Frédéric Deschamps, Yi-Chi Tsao, Jen-Wei Chang, Giacomo Criniti. Reduced Thermal Conductivity of Hydrous Aluminous Silica and Calcium Ferrite-Type Phase Promote Water Transportation to Earth's Deep Mantle. Journal of Geophysical Research: Solid Earth. 2025
  • Eiji Ohtani, Takayuki Ishii. Role of water in dynamics of slabs and surrounding mantle. Progress in Earth and Planetary Science. 2024. 11. 1
  • Niccolò Satta, Giacomo Criniti, Alexander Kurnosov, Tiziana Boffa Ballaran, Takayuki Ishii, Hauke Marquardt. Elastic anomalies across the P21nm→Pnnm structural phase transition in δ-(Al,Fe)OOH. American Mineralogist. 2024. 109. 11. 1934-1944
  • Masaki Akaogi, Takayuki Ishii, Kazunari Yamaura. Post-spinel-type AB2O4 high-pressure phases in geochemistry and materials science. Communications Chemistry. 2024. 7. 1
ｍore...
MISC (5)：
  • Takayuki Ishii, Tomoo Katsura. Curved post-garnet phase boundary and its implications for mantle dynamics. SPring-8 Research Frontiers 2023. 2024. 96-97
  • A curved post-garnet boundary enhances slab and plume dynamics in the Earth’s mantle. Nature Geoscience. 2023. 16. 9. 766-767
  • Artem Chanyshev, Takayuki Ishii, Tomoo Katsura. Akimotoite-bridgmanite phase transition explains depressed 660-km seismic discontinuity in subduction zones. SPring-8 Research Frontiers 2021. 2022. 96-97
  • Takayuki Ishii, Tomoo Katsura. Sharp 660-km seismic discontinuity explained by extremely narrow binary post-spinel transition. 2020. 74-75
  • Takayuki Ishii, Tomoo Katsura. Complete agreement of the post-spinel transition pressure with the 660-km seismic discontinuity depth. SPring-8 Research Frontiers 2018. 2019. 88-89
Lectures and oral presentations  (27)：
  • 川井型マルチアンビルプレスを用いた高温高圧発生技術の開発とその新規物質合成への応用
    (第34回日本MRS年次大会 2024)
  • Water in davemaoite assessed from water solubility of perovskite phases in CaSiO3-CaTiO3 systems up to uppermost lower mantle
    (アメリカ地球物理連合大会2024)
  • 含水系における鉱物の高圧相関係と元素分配から見る地球深部水循環とダイナミクス
    (高圧討論会 2024)
  • 高温高圧実験技術の開発とマントル鉱物の相平衡関係・結晶化学の研究
    (日本鉱物科学会2024年会・総会 2024)
  • Water in davemaoite inferred from water contents of CaTiO3-bearing CaSiO3 perovskite up to uppermost lower mantle conditions
    (2024)
ｍore...
Education (3)：
  • 2012 - 2015 Gakushuin University Graduate School of Natural Science
  • 2010 - 2012 Gakushuin University Graduate School of Natural Science
  • 2006 - 2010 Gakushuin University Faculty of Science Department of Chemistry
Professional career (2)：
  • Ph.D. of Science (Gakushuin University)
  • M.S. of Science (Gakushuin University)
Work history (7)：
  • 2023/04 - 現在 Okayama University The Institute for Planetary Materials Associate Professor
  • 2021/01 - 2023/03 Center for High Pressure Science & Technology Advanced Research Staff scientist
  • 2019/04 - 2020/12 University of Bayreuth Bayerisches Geoinstitut Principal investigator granted by German Research Foundation
  • 2017/04 - 2019/03 University of Bayreuth Bayerisches Geoinstitut Alexander von Humboldt research fellow
  • 2016/04 - 2017/03 University of Bayreuth Bayerisches Geoinstitut Japan Society for the Promotion of Science overseas research fellow
Show all
Awards (3)：
  • 2024/09 - Japan Association of Mineralogical Sciences Research encouragement award Development of high-pressure experimental techniques and studies of phase relations and crystal chemistry of mantle minerals
  • 2021/12 - American Geophysical Union Mineral and Rock Physics Early Career Award
  • 2019/10 - The Japan Society of High Pressure Science and Technology The Encouragement Prize
Association Membership(s) (7)：
Japan Association ,  International Association for the Advancement of High Pressure Science and Technology ,  European High Pressure Research Group ,  American geophysical union ,  International Mineralogical Association ,  Japan Society of High Pressure Science and Technology ,  Japan Geoscience Union
※ Researcher’s information displayed in J-GLOBAL is based on the information registered in researchmap. For details, see here.

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