Magnetic measurements of hydrogen desorption from palladium hydride PdH0.64prepared by severe plastic deformation

Masaki Mito, Tomoya Fukuyama, Yuichiro Kitamura, Hiroyuki Deguchi, Kaveh Edalati, Zenji Horita

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

Hydrogen absorption and desorption through diffusive processes and the accompanying phase transformations in hydrogen storage materials have been investigated by X-ray diffraction, thermogravimetry, pressure-composition-temperature isotherms, and electrical resistance measurements. We use time- A nd temperature-dependent magnetic measurements to gain a detailed understanding of these phenomena in palladium hydride PdH 0.64 prepared by severe plastic deformation via the high-pressure torsion method. The concept of our method is pursuing an increase in the ratio of the paramagnetic α-phase Pd+H to the diamagnetic β-phase PdH. An antiferromagnetic correlation appears between the paramagnetic moments of Pd at a low temperature and a huge discrete change in magnetization appears due to collective H desorption above room temperature. It is also verified that H diffusion and its desorption can be changed with the accumulation of the severe lattice strain.

本文言語英語
論文番号215109
ジャーナルJournal of Applied Physics
127
21
DOI
出版ステータス出版済み - 6 7 2020

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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