Exchange-bias dependent diffusion rate of hydrogen discovered from evolution of hydrogen-induced noncollinear magnetic anisotropy in FePd thin films

Hydrogenation-induced noncollinear magnetic anisotropy is observed from the evolution of the magnetic domains in FePd alloy thin films using magneto-optic Kerr effect (MOKE) microscopy. MOKE images reveal complicated competitions between different magnetic anisotropies during hydrogen diffusion into...

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Bibliographic Details
Published in:arXiv.org 2021-12
Main Authors: Wei-Hsiang, Wang, Yu-Song, Cheng, Sheu, Hwo-Shuenn, Wen-Chin, Lin, Jiang, Pei-hsun
Format: Article
Language:English
Subjects:
Bias
Diffusion rate
Evolution
Ferrous alloys
Hydrogen
Hydrogen storage
Intermetallic compounds
Iron compounds
Kerr magnetooptical effect
Magnetic anisotropy
Magnetic domains
Metal hydrides
Palladium compounds
Thin films
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Summary:Hydrogenation-induced noncollinear magnetic anisotropy is observed from the evolution of the magnetic domains in FePd alloy thin films using magneto-optic Kerr effect (MOKE) microscopy. MOKE images reveal complicated competitions between different magnetic anisotropies during hydrogen diffusion into the film. An intriguing enhancement of the hydrogen diffusion rate due to the presence of an initial exchange bias induced by a high magnet field is thereby discovered, pointing to an additional scope of controllability of magnetic metal hydrides as potential future hydrogen sensing and storage materials.
ISSN:2331-8422
DOI:10.48550/arxiv.2112.05079