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Modeling exchange bias microscopically

U. Nowak·A. Misra·K. D. Usadel
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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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U. Nowak, A. Misra, K. D. Usadel. 2002-03-15. Modeling exchange bias microscopically. https://doi.org/10.1016/s0304-8853(01)00813-7

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