Complex spin configurations in hybrid magnetic multilayer structures due to mutual spin imprinting
Complex spin configurations in hybrid magnetic multilayer structures due to mutual spin imprinting
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DOI：
10.1103/physrevb.94.104415
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发表时间：
2016-09
影响因子：
3.7
通讯作者：
M. Bryan;G. Heldt;T. Thomson;L. Heyderman;G. Hrkac
中科院分区：
文献类型：
--
作者：
M. Bryan;G. Heldt;T. Thomson;L. Heyderman;G. Hrkac
混合Co/Pd坡莫合金多层结构表现出多个域相相互自旋压印，依赖于精确的层组成和厚度。虽然这种混合结构可以支持纯朗道闭合畴模式或垂直交换弹簧磁化结构，数值分析也揭示了一个异常的混合朗道迷宫畴状态。层之间的自旋配置的相互印记是最强的后者多畴状态，我们建议是交换能量耗散的两个横向尺寸的后果。畴相界的分析推导与微磁学模拟结果一致，并对它们的起源提供了重要的见解。
Hybrid Co/Pd-Permalloy multilayer structures exhibit multiple domain phases resulting from mutual spin imprinting, dependent on the precise layer composition and thickness. While such hybrid structures can support either a pure Landau closure-domain pattern or a perpendicular exchange-spring magnetization structure, numerical analysis also revealed an anomalous mixed Landau-maze domain state. Mutual imprinting of the spin configuration between the layers was strongest for the latter multidomain state, which we propose is a consequence of exchange energy dissipation over the two lateral dimensions. An analytical derivation of domain phase boundaries was consistent with the micromagnetic simulations and gave important insight into their origin.