{"title":"Hydrogen-mediated control of magnetic anisotropy and magnetic domain structure in Co/Pd multilayer","authors":"Yan-Ru Chu, Xi-Wei Lu, Chun-Tse Hsieh, Chun-Yen Huang, Po-Hsiang Hsu, Li-Jie Liaw, Chak-Ming Liu, Wen-Chin Lin","doi":"10.1063/5.0242410","DOIUrl":null,"url":null,"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.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"132 1","pages":""},"PeriodicalIF":3.5000,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Physics Letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1063/5.0242410","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}
引用次数: 0
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.
期刊介绍：
Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology.
In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics.
APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field.
Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.
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