Applied Physics Letters

Hydrogen-mediated control of magnetic anisotropy and magnetic domain structure in Co/Pd multilayer

Y Yan-Ru Chu (Department of Physics, National Taiwan Normal University , Taipei 11677,) X Xi-Wei Lu (Graduate School of Advanced Technology, National Taiwan University 1 , Taipei,) C Chun-Tse Hsieh (Department of Physics, National Taiwan Normal University , Taipei 11677,) C Chun-Yen Huang (Department of Physics, National Taiwan Normal University , Taipei 11677,) P Po-Hsiang Hsu (Department of Physics, National Taiwan Normal University , Taipei 11677,) L Li-Jie Liaw (Department of Physics, National Taiwan Normal University , Taipei 11677,) C Chak-Ming Liu (Department of Physics, National Taiwan Normal University , Taipei 11677,) W Wen-Chin Lin (Department of Physics, National Taiwan Normal University , Taipei 11677,)

Abstract

This study demonstrates the reversible transition from perpendicular to in-plane magnetic anisotropy in Co/Pd multilayers induced by hydrogenation, using a magneto-optic Kerr microscope. By controlling hydrogen pressure and exposure time, the transition is separated into coercivity and squareness ratio changes, reflecting reduced perpendicular anisotropy and spin reorientation. The Dzyaloshinskii–Moriya interaction is observed through asymmetric magnetic domain expansion, with hydrogenation causing domains to fragment. These results suggest hydrogenation as a method for precise control of magnetic anisotropy and domain structures.

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Article Details

Volume / Issue Vol. 126, Issue 1
Published January 06, 2025
ISSN 0003-6951
Publisher American Institute of Physics

Journal Info

Applied Physics Letters

American Institute of Physics
ISSN: 0003-6951 Physical Sciences

Authors (8)

Y

Yan-Ru Chu

Department of Physics, National Taiwan Normal University , Taipei 11677,

X

Xi-Wei Lu

Graduate School of Advanced Technology, National Taiwan University 1 , Taipei,

C

Chun-Tse Hsieh

Department of Physics, National Taiwan Normal University , Taipei 11677,

C

Chun-Yen Huang

Department of Physics, National Taiwan Normal University , Taipei 11677,

P

Po-Hsiang Hsu

Department of Physics, National Taiwan Normal University , Taipei 11677,

L

Li-Jie Liaw

Department of Physics, National Taiwan Normal University , Taipei 11677,

C

Chak-Ming Liu

Department of Physics, National Taiwan Normal University , Taipei 11677,

W

Wen-Chin Lin

Department of Physics, National Taiwan Normal University , Taipei 11677,

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