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Modeling exchange bias microscopically

2002/02/01 by U. Nowak, A. Misra, K. D. Usadel +1 · 64 citations
Engineering · Materials Science · Physics and Astronomy · #Anisotropy #Antiferromagnetism #Exchange bias #Ferromagnetism #Hysteresis #Magnetic Properties and Applications #Magnetic anisotropy #Magnetic properties of thin films #Magnetization #Metallic Glasses and Amorphous Alloys #cond-mat.mtrl-sci #cond-mat.stat-mech

paper · pdf · doi:10.1016/s0304-8853(01)00813-7

published in Journal of Magnetism and Magnetic Materials 240(1-3), 243-247 (Elsevier BV) · 7 pages, 5 figures

openalex publication_date 2002/02/01 · arxiv created 2002/03/15 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Exchange bias is a horizontal shift of the hysteresis loop observed for a ferromagnetic layer in contact with an antiferromagnetic layer. Since exchange bias is related to the spin structure of the antiferromagnet, for its fundamental understanding a detailed knowledge of the physics of the antiferromagnetic layer is inevitable. A model is investigated where domains are formed in the volume of the AFM stabilized by dilution. These domains become frozen during the initial cooling procedure carrying a remanent net magnetization which causes and controls exchange bias. Varying the anisotropy of the antiferromagnet we find a nontrivial dependence of the exchange bias on the anisotropy of the antiferromagnet.

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