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Mechanism of chirality reversal for planar interface domain walls in exchange-coupled hard/soft magnetic bilayers

机译:交换耦合硬/软磁性双层膜中平面界面畴壁的手性反转机理

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摘要

The mechanism of chirality reversal for a planar interface domain wall in a hard/soft magnetic bilayer has been identified by combining magnetoresistance measurements, modeling, and direct magnetic domain observations. The reversal occurs through IDW nucleation and lateral domain wall propagation. Over an unpredicted wide range of applied magnetic fields, the chirality transition takes place by an unwinding followed by a rewinding of the IDW. The chirality transition mechanism of phase transition could be identified from a micromagnetic analysis of the lateral magnetic domain wall orientation. Up to three magnetization phases coexist in the uniaxial material during reversal.
机译:通过结合磁阻测量,建模和直接磁畴观测,已经确定了硬/软磁双层中平面界面畴壁的手性反转机理。逆转是通过IDW成核和横向畴壁传播而发生的。在未预料到的大范围外加磁场下,手性转变通过退绕紧接着IDW的退绕而发生。可以从横向磁畴壁取向的微磁分析确定相转变的手性转变机理。在反转过程中,单轴材料中最多可共存在三个磁化相。

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