Asymmetric hysteresis loops due to different magnetization reversal process in different branches of the hysteresis loop are common[1-5] in exchange coupled FM(ferromagnet)/AF(antiferromagnet) layer. Theoretically Beckmann et. al[6] showed that depending on θ, the angle between applied field H_a and the AF anisotropy axis or the field cooling axis H_FC, the reversal mode is either by coherent rotation(uniform reversal mode) for both loop branches or asymmetric with a nonuniform reversal for the increasing branch. Here nonuniform refer to the reversal by domain wall motion.
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机译：由于不同分支的不同磁化反转过程中的不对称滞后环是滞后回路的不同分支是常见的[1-5]中的交换耦合FM（铁圆环）/ AF（反霉素）层。理论上beckmann等。 al [6]显示，取决于θ，施加的字段H_A和AF各向异性轴之间的角度和现场冷却轴H_FC，反转模式是通过相干旋转（均匀的反转模式），用于两个环路分支或不均匀的不对称增加分支的逆转。这里不均匀地指的是域壁运动的逆转。
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