Co/Pt/Gd/Pt多层膜的层间耦合和磁化过程

IEEE Translation Journal on Magnetics in Japan Pub Date : 1994-11-01 DOI:10.1109/TJMJ.1994.4565975

K. Takanashi;M. Ohba;H. Kurokawa;H. Fujimori

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引用次数: 1

摘要

我们研究了Co/Pt/Gd/Pt多层膜的磁化过程，以研究Co和Gd之间通过Pt的间接交换耦合。在Pt层厚度为tpt≪10Å的样品中观察到正常的自旋翻转行为。另一方面，在tPt́10Å中观察到了一种具有“负矫顽力”的新型磁滞回线。这种环路被认为是由于Co层和Gd层之间的反铁磁耦合以及作用于Co层磁化的大磁各向异性的综合效应。计算的磁化曲线与实验结果吻合较好。根据计算和实验的比较估计的反铁磁耦合强度以振荡的方式随着tPt的增加而衰减。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Interlayer Coupling and Magnetization Process in Co/Pt/Gd/Pt Multilayers

We investigated the magnetization process in Co/Pt/Gd/Pt multilayer films in order to study the indirect exchange coupling between Co and Gd through Pt. Normal spin-flop behavior was observed in samples with a Pt layer thickness t pt ≪10Å. On the other hand, a novel hysteresis loop with "negative coercivity" was observed for t Pt ≫10Å. This loop is considered to be due to the combined effect of the antiferromagnetic coupling between the Co and Gd layers, and the large magnetic anisotropy acting on the Co layer magnetization. The calculated magnetization curves agree well with experimental results. The antiferromagnetic coupling strength estimated from a comparison of calculations and experiment decays in an oscillating manner with increasing t Pt .

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IEEE Translation Journal on Magnetics in Japan

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