Publication List
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- , Kazuki Komatsu, Kenji Mochizuki, Hayate Ito, Koichi Momma, Shinichi Machida, Takanori Hattori, Kunio Hirata, Yoshiaki Kawano, Saori Maki-Yonekura, Kiyofumi Takaba, Koji Yonekura, Qianli Xue, Misaki Sato, and Hiroyuki Kagi. "New metastable ice phases via supercooled water". arXiv preprint, Submitted.
- Stefan Klotz*, Matteo d'Astuto, Victorien Joyet, , Eddy Lelièvre-Berna, James Maurice, Claude Payre, and Stanislav Savvin. Submitted.
- Sota Takagi, Naoko Takahashi, Minsu Jang, Huijeng Hwang, Jinhyuk Choi, Hyunseung Lee, Yongmoon Lee, Donghoon Seoung, , Norimasa Ozaki, Pikuz Tatiana, Hirotaka Nakamura, Alexs Amouretti, Toshinori Yabuuchi, Kohei Miyanishi, and Donghoon Kim*. Submitted.
- Mika Yoshioka*, , and Hiroyuki Kagi*. Submitted.
- HK et al., in preparation
- HK et al., in preparation
- HK et al., in preparation
- HK et al., in preparation
- HK et al., in preparation
- HK et al., in preparation
- Co-authored, in preparation
- Co-authored, in preparation
- Co-authored, in preparation
2024
Hydrogen bond symmetrisation in D2O ice observed by neutron diffraction
Kazuki Komatsu*, Takanori Hattori, Stefan Klotz*, Shinichi Machida, Keishiro Yamashita, Hayate Ito, , Tetsuo Irifune, Toru Shinmei, Asami Sano-Furukawa, and Hiroyuki Kagi.
Nature Communications (2024) 15 1 5100
DOI: 10.1038/s41467-024-48932-8
High-pressure and high-temperature Raman spectroscopic study of zircon as a pressure scale in hydrothermal DACs
Naoko Takahashi*, , and Hiroyuki Kagi.
Journal of Raman Spectroscopy (2024) 55 6 706
DOI: 10.1002/jrs.6663
A collaboration with Naoko, we expanded the p-T region where the zircon Raman pressure scale is applicable. I mainly contributed to synchrotron x-ray diffraction measurements and analysis. Our x-ray diffraction results give a firm support to the previous work by Schmidt et al., with consistency to the standard primary pressure scale of gold.
2023
Slightly Hydrogen-Ordered State of Ice IV Evidenced by In-Situ Neutron Diffraction
, Kazuki Komatsu, Hayate Ito, Shinichi Machida, Takanori Hattori, and Hiroyuki Kagi.
The Journal of Physical Chemistry Letters (2023) 14 10664
DOI: 10.1021/acs.jpclett.3c02563
We reported crystallographic evidence for the hydrogen ordering in ice IV by neutron diffraction. It shows discontinuous behaviour at 120 K and Rietveld analysis at the low-T side suggests it is a very weak hydrogen ordering structural transition.
Project led by Komatsu san. We refined for the first time the hydrogen-atom position in ice VII (X) up to 106 GPa by in-situ powder neutron diffraction using nano-polycrystalline diamond anvil cells. I participated in experiments and discussion.