Asymmetric magnetization reversal in exchange biased polycrystalline F/AF bilayers

نویسنده

  • D. Spenato
چکیده

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 β is introduced to quantify the easy axis dispersion of AF grains.

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تاریخ انتشار 2003