Asymmetric magnetization reversal in exchange biased polycrystalline F/AF bilayers

Details Asymmetric magnetization reversal in exchange biased polycrystalline F/AF bilayers Asymmetric magnetization reversal in exchange biased polycrystalline F/AF bilayers

2003-11-14

arxiv.org/abs/cond-mat/0311351v1

J. Magn. Mat. Mat. 262/2, 294 (2003)

Physics

Condensed Matter

Materials Science

15 pages, 4 figures

Scientific paper

10.1016/S0304-8853(02)01524-X

This paper describes a model for magnetization reversal in polycrystalline Ferromagnetic/Antiferromagnetic exchange biased bilayers. We assume that the exchange energy can be expanded into cosine power series. We show that it is possible to fit experimental asymmetric shape of hysteresis loops in exchange biased bilayer for any direction of the applied field. The hysteresis asymmetry is discussed in terms of energy considerations. An angle beta is introduced to quantify the easy axis dispersion of AF grains.

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