Iizuka-Oku Riko

Research theme for competitive and other funds (9)：

2023 - 2026 アルカリケイ酸塩を介した下部マントル深部への希ガス貯蔵
2018 - 2023 Material Science of Hydrogen in the deep earth and planets
2018 - 2022 Behaviors of light elements during early Earth's formation from high-pressure and high-temperature experiments
2013 - 2017 中性子回折用超高圧装置の開発と高圧下における水素結合系物質の挙動の解明
2013 - 2016 Study of hydrogen in the Earth's core based on the high-pressure neutron experiments

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Papers (27)：

Akihiko Machida, Hiroyuki Saitoh, Hidehiko Sugimoto, Takanori Hattori, Asami Sano-Furukawa, Naruki Endo, Yoshinori Katayama, Riko Iizuka, Toyoto Sato, Motoaki Matsuo, et al. Addendum: Site occupancy of interstitial deuterium atoms in face-centred cubic iron. Nature Communications. 2024. 15. 1
Chikara Shito, Hiroyuki Kagi, Sho Kakizawa, Katsutoshi Aoki, Kazuki Komatsu, Riko Iizuka-Oku, Jun Abe, Hirioyuki Saitoh, Asami Sano-Furukawa, Takanori Hattori. Hydrogen occupation and hydrogen-induced volume expansion in Fe0.9Ni0.1Dxat high P-T conditions. American Mineralogist. 2023. 108. 4. 659-666
Riko Iizuka-Oku, Hirotada Gotou, Akio Suzuki, Hiroyuki Kagi. In-situ X-ray diffraction and radiography of iron-silicate-water-sulfur system simulating behaviors of light elements during early Earth’s core-mantle segregation. High Pressure Research. 2022. 42. 4. 349-363
Riko Iizuka-Oku, Hirotada Gotou, Chikara Shito, Ko Fukuyama, Yuichiro Mori, Takanori Hattori, Asami Sano-Furukawa, Ken ichi Funakoshi, Hiroyuki Kagi. Behavior of light elements in iron-silicate-water-sulfur system during early Earth’s evolution. Scientific Reports. 2021. 11. 1
Yuichiro Mori, Hiroyuki Kagi, Sho Kakizawa, Kazuki Komatsu, Chikara Shito, Riko Iizuka-Oku, Katsutoshi Aoki, Takanori Hattori, Asami Sano-Furukawa, Ken Ichi Funakoshi, et al. Neutron diffraction study of hydrogen site occupancy in Fe0.95Si0.05 at 14.7 GPa and 800 K. Journal of Mineralogical and Petrological Sciences. 2021. 116. 6. 309-313

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MISC (6)：

Riko Iizuka-Oku, Hiroyuki Kagi. Effect of Sulfur on Hydrogenation of Metallic Iron and Evolution of the Earth's Core. Materia Japan. 2022. 61. 4. 202-209
Riko Iizuka-Oku, Takehiko Yagi, Hirotada Gotou, Takuo Okuchi, Takanori Hattori, Asami Sano-Furukawa. In-Situ Neutron Diffraction of Iron Hydride in Iron-silicate-water System under High Pressure and High Temperature Condition. hamon. 2017. 27. 3. 104-108
Riko Iizuka-Oku. Development of opposed-type anvils with wide-angle aperture and investigation of pressure-induced phase transition of Ca(OD)2. Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu. 2016. 26. 2. 128-139
飯塚, 理子, 岡, 光夫. 世界に羽ばたく理学博士第10回. 東京大学理学系研究科・理学部ニュース. 2013. 45. 2. 8-9
Iizuka Riko. Pressure Responses of Hydrogen Bonds in Hydrous Minerals -Pressure-induced Phase Transition in Ca(OH)₂ and Technical Development of High Pressure Neutron Experiments-. Chikyukagaku. 2012. 46. 3. 186-187

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Lectures and oral presentations (9)：

Neutron diffraction experiments on beta-CrOOD at high pressure and temperature
(Abstracts of Annual Meeting of the Geochemical Society of Japan 2019)
In-situ synchrotron X-ray imaging on Fe-hydrous silicate under high pressure and high temperature: Implication for Earth's evolution process
(Abstracts of Annual Meeting of the Geochemical Society of Japan 2019)
Pressure-induced Phase Transition of Alkali Metal Hydrogen Carbonates
(Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences 2017)
Studies on thermal expansion mechanism of portlandite by neutron diffraction measurements
(Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences 2012)
Isotope effects on pressure-response of dense hydrous materials
(Abstracts of Annual Meeting of the Geochemical Society of Japan 2011)

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Work history (7)：

2023/04 - 現在 Waseda University Faculty of Education and Integrated Arts and Sciences
2020/10 - 現在 The University of Tokyo Graduate School of Science Laboratory for Earthquake Chemistry Visiting Collaborative Researcher
2021/11 - 2023/03 Harvard University Department of Earth and Planetary Sciences Research Associate
2017/01 - 2023/03 Geochemical Journal Editing secretary
2016/12 - 2020/09 The University of Tokyo Graduate School of Science Laboratory for Earthquake Chemistry Project assistant professor

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Association Membership(s) (4)：

American Geophysical Union , 日本地球惑星科学連合 , 日本地球化学会 , 日本高圧力学会

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