Kazuki Ohishi
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Deputy division head, Chief Scientist, BL15 Group Leader
JapanResearch Interests
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About
Kazuki Ohishi is a Deputy Division Head and Chief Scientist at the CROSS Neutron Science and Technology Center in Japan. His research focuses on various aspects of neutron science, particularly concerning metal-insulator transitions, ion dynamics in layered materials, and the study of magnetic properties using muon spin techniques. Recent publications include investigations into zeolite systems, magnetic phase diagrams, and chiral soliton lattices.
Recent Grants
Grant: Close
Elucidation of antisymmetric spin orbit interaction of chiral magnetic material by small angle polarized neutron analysis method
Open Date: 2017-04-01
Close Date: 2020-03-31
Grant: Close
Real space three-dimensional imaging of spiral magnetic order in the chiral magnetic body
Open Date: 2014-04-01
Close Date: 2016-03-31
Grant: Close
Relation between crystallographic and magnetic chiralities in chiral helimagnets probed by polarized neutron scattering
Open Date: 2013-04-01
Close Date: 2016-03-31
Grant: Close
Study of magnetic flux lattice of the two superconductors
Open Date: 2000-01-01
Close Date: 2001-12-31
Articles (10)
Year:
2025
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2025
Year:
2024
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2024
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2024
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2024
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2024
Year:
2023
Chiral helimagnetism was investigated in transition-metal intercalated dichalcogenide single crystals of MnTa3S6. Small-angle neutron scattering (SANS) experiments revealed the presence of harmonic chiral helimagnetic order, which was successfully detected as a pair of satellite peaks in the SANS pattern. The magnetization data are also supportive of the presence of chiral soliton lattice (CSL) phase in MnTa3S6. The observed features are summarized in the phase diagram of MnTa3S6, which is in strong contrast with that observed in other dichalcogenides such as CrNb3S6 and CrTa3S6. The presence of the remanent state provides tunable capability of the number of chiral solitons at zero magnetic field in the CSL system, which may be useful for memory device applications.
Year:
2023
Year:
2023
Collaborators (6)
Takehito Nakano
Ibaraki University
Ryoichi Tatara
Assistant Professor
University of Tokyo
Y. Togawa
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Tomoyuki Homma
Research & Education/ Associate Professor
Nagaoka University of Technology
Ken-ichi Ikeda
Associate Professor
Hokkaido University
Kenji Matsuda
Prof
University of Toyama
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