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

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Article number215109
JournalJournal of Applied Physics
Volume127
Issue number21
DOIs
Publication statusPublished - Jun 7 2020

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'Magnetic measurements of hydrogen desorption from palladium hydride PdH<sub>0.64</sub>prepared by severe plastic deformation'. Together they form a unique fingerprint.

Cite this