| Origin of the training effect and asymmetry of the magnetization in polycrystalline exchange bias systems. | |
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MedLine Citation:
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PMID: 17930863 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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The training effect and asymmetry in exchange-coupled polycrystalline CoO/Co bilayers with in-plane magnetization has been investigated. This system is selected for its large training effect and initial asymmetry of the magnetic hysteresis after field cooling, which is removed after training. Applying an in-plane magnetic field perpendicular to the cooling field largely restores the untrained state with its pronounced asymmetry. The possibility to reinduce the asymmetry strongly depends on the magnitude of the perpendicular field, providing the key to identify the physical origin of training and removal of the asymmetry. These effects result from misalignment between the ferromagnetic magnetization and the uncompensated magnetization of the granular antiferromagnet. |
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Authors:
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Steven Brems; Kristiaan Temst; Chris Van Haesendonck |
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Publication Detail:
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Type: Journal Article Date: 2007-08-09 |
Journal Detail:
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Title: Physical review letters Volume: 99 ISSN: 0031-9007 ISO Abbreviation: Phys. Rev. Lett. Publication Date: 2007 Aug |
Date Detail:
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Created Date: 2007-10-12 Completed Date: 2008-01-29 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0401141 Medline TA: Phys Rev Lett Country: United States |
Other Details:
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Languages: eng Pagination: 067201 Citation Subset: - |
Affiliation:
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Laboratorium voor Vaste-Stoffysica en Magnetisme and Institute for Nanoscale Physics and Chemistry (INPAC), K.U. Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium. steven.brems@fys.kuleuven.be |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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