Interplay between reversal asymmetry, training, and induced anisotropy in epitaxial exchange-biased bilayers

M. S. Lund, C. Leighton

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Interdiffused NiMn/Ni (111) (antiferromagnet/ferromagnet) bilayers are shown to be a model system for the study of the effects of exchange-induced anisotropy on magnetization reversal asymmetry, training, and exchange bias. Interdiffusion at the interface between antiferromagnet and ferromagnet provides a unique opportunity to assess, in a single sample, the effect of uniaxial vs biaxial anisotropy on phenomena such as training and reversal asymmetry. As predicted by recent theory, we find that the existence of a strong training effect, and an accompanying reversal asymmetry, can be directly correlated with the presence of biaxial exchange-induced anisotropy.

Original languageEnglish (US)
Article number104433
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume76
Issue number10
DOIs
StatePublished - Sep 26 2007

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Anisotropy
education
asymmetry
anisotropy
Magnetization reversal
magnetization

Cite this

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AB - Interdiffused NiMn/Ni (111) (antiferromagnet/ferromagnet) bilayers are shown to be a model system for the study of the effects of exchange-induced anisotropy on magnetization reversal asymmetry, training, and exchange bias. Interdiffusion at the interface between antiferromagnet and ferromagnet provides a unique opportunity to assess, in a single sample, the effect of uniaxial vs biaxial anisotropy on phenomena such as training and reversal asymmetry. As predicted by recent theory, we find that the existence of a strong training effect, and an accompanying reversal asymmetry, can be directly correlated with the presence of biaxial exchange-induced anisotropy.

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