化学科 - 学習院大学研究者情報

研究キーワード

熱化学 ,超高圧 ,鉱物物理学 ,Thermo Chemistry ,Ultra High-Pressure ,Mineral Physics

研究分野

自然科学一般 / 固体地球科学 /

経歴

12 3 >

2021年4月

-

現在

学習院大学理学部化学科准教授

2007年4月

-

2021年3月

学習院大学理学部化学科助教

2001年10月

-

2007年3月

学習院大学理学部化学科助手

2001年

-

2007年

:学習院大学理学部化学科助手

2007年

-:学習院大学理学部化学科助教

委員歴

2018年9月

-

現在

日本鉱物科学会広報委員

2018年9月

-

現在

日本高圧力学会評議員（庶務幹事）

2009年9月

-

2012年8月

日本高圧力学会高圧力学会誌の編集委員

2009年9月

-

2012年8月

The Japan Society of High Pressure Science and Technology Editor of the Journal "The Review of High Pressure Science and Tachnology"

受賞

2018年9月

日本鉱物科学会, 日本鉱物科学会賞,熱測定と分光学的手法によるマントル鉱物の熱力学的性質及び結晶構造に関する研究
糀谷浩

論文

12 3 4 5 >

Experimental determination of thermal expansivity of calcium ferrite-type MgAl₂O₄ and its application to thermodynamical assessment of thermoelastic parameters

Hiroshi Kojitani Mei Gonai Yoshiyuki Inaguma Masaki Akaogi

Physics and Chemistry of Minerals 51(1) 2024年2月 [査読有り]

Large anomalous Hall effect observed in cubic antiferromagnet Mn₃Sb with Kagome lattice

Hiroaki Hayashi Yuichi Shirako Lei Xing Alexei A. Belik Masao Arai Masanori Kohno Taichi Terashima Hiroshi Kojitani Masaki Akaogi Kazunari Yamaura

Physical Review B 108(7) 2023年8月 [査読有り]

Post-spinel transition of Fe₂SiO₄ ahrensite at high pressure and high temperature

Masaki Akaogi Natsuki Miyazaki Taisuke Tajima Hiroshi Kojitani

Physics and Chemistry of Minerals 50(3) 2023年7月

Enthalpy, heat capacity and thermal expansivity measurements of MgSiO3 akimotoite: Reassessment of its self-consistent thermodynamic data set

Hiroshi Kojitani Monami Yamazaki Yuki Tsunekawa Shiho Katsuragi Masamichi Noda Toru Inoue Yoshiyuki Inaguma Masaki Akaogi

Physics of the Earth and Planetary Interiors 333 106937-106937 2022年12月 [査読有り]

High-pressure syntheses and crystal structure analyses of a new low-density CaFe2O4-related and CaTi2O4-type MgAl2O4 phases

Takayuki Ishii Giacomo Criniti Elena Bykova Leonid Dubrovinsky Tomoo Katsura Hidekazu Arii Hiroshi Kojitani Masaki Akaogi

American Mineralogist 106(7) 1105-1112 2021年7月 [査読有り]

Abstract

Three single crystals of CaTi2O4 (CT)-type, CaFe2O4 (CF)-type, and new low-density CaFe2O4 (LD-CF) related MgAl2O4 were synthesized at 27 GPa and 2500 °C and also CT-type MgAl2O4 at 45 GPa and 1727 °C using conventional and advanced mul...

MISC

<3 456 7 >

Redetermination of high-temperature heat capacity of Mg2SiO4 ringwoodite: Measurement and lattice vibrational model calculation

Hiroshi Kojitani Madoka Oohata Toru Inoue Masaki Akaogi

AMERICAN MINERALOGIST 97(8-9) 1314-1319 2012年8月

Isobaric heat capacities (C-p) of Mg2SiO4 forsterite and ringwoodite were measured by differential scanning calorimetry in the temperature range of 306-833 K. The measured C-p of Mg2SiO4 forsterite was consistent with those reported by previous st...

High-pressure stability relations, crystal structures, and physical properties of perovskite and post-perovskite of NaNiF3

Y. Shirako Y. G. Shi A. Aimi D. Mori H. Kojitani K. Yamaura Y. Inaguma M. Akaogi

JOURNAL OF SOLID STATE CHEMISTRY 191 167-174 2012年7月

NaNiF3 perovskite was found to transform to post-perovskite at 16-18 GPa and 1273-1473 K. The equilibrium transition boundary is expressed as P (GPa)= -2.0+0.014 x T (K). Structure refinements indicated that NaNiF3 perovskite and post-perovskite h...

High-pressure stability relations, crystal structures, and physical properties of perovskite and post-perovskite of NaNiF3

Y. Shirako Y. G. Shi A. Aimi D. Mori H. Kojitani K. Yamaura Y. Inaguma M. Akaogi

JOURNAL OF SOLID STATE CHEMISTRY 191 167-174 2012年7月

NaNiF3 perovskite was found to transform to post-perovskite at 16-18 GPa and 1273-1473 K. The equilibrium transition boundary is expressed as P (GPa)= -2.0+0.014 x T (K). Structure refinements indicated that NaNiF3 perovskite and post-perovskite h...

Perovskite-to-Postperovskite Transitions in NaNiF3 and NaCoF3 and Disproportionation of NaCoF3 Postperovskite under High Pressure and High Temperature

Hitoshi Yusa Yuichi Shirako Masaki Akaogi Hiroshi Kojitani Naohisa Hirao Yasuo Ohishi Takumi Kikegawa

INORGANIC CHEMISTRY 51(12) 6559-6566 2012年6月

High-pressure structural phase transitions in NaNiF3 and NaCoF3 were investigated by conducting in situ synchrotron powder X-ray diffraction experiments using a diamond anvil cell. The perovskite phases (GdFeO3 type) started to transform into post...

Perovskite-to-Postperovskite Transitions in NaNiF3 and NaCoF3 and Disproportionation of NaCoF3 Postperovskite under High Pressure and High Temperature

Hitoshi Yusa Yuichi Shirako Masaki Akaogi Hiroshi Kojitani Naohisa Hirao Yasuo Ohishi Takumi Kikegawa

INORGANIC CHEMISTRY 51(12) 6559-6566 2012年6月

High-pressure structural phase transitions in NaNiF3 and NaCoF3 were investigated by conducting in situ synchrotron powder X-ray diffraction experiments using a diamond anvil cell. The perovskite phases (GdFeO3 type) started to transform into post...