CO/X/Gd/X 人工格子(X =Cu, Ag, Au, Pt. Y, およびW)の間接交換結合と磁化過程

CO/X/Gd/X 人工格子(X =Cu, Ag, Au, Pt. Y, およびW)の間接交換結合と磁化過程
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CO/X/Gd/X人工晶格(X=Cu、Ag、Au、Pt、Y和W)的间接交换耦合和磁化过程

DOI:
10.3379/jmsjmag.21.537
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发表时间:
1997
影响因子:
--
通讯作者:
啓安 藤森
啓安 藤森
中科院分区:
--
文献类型:
--
作者:
正志 大場;弘毅 高梨;啓安 藤森

文献摘要

被引文献

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我们研究了Co/X/Gd/X多层(X=Cu, Ag, Au, Pt, Y和W)中Co和Gd之间的非磁性中间层间的间接交换耦合。对于所有X,自旋-翻转场Hsf随层间厚度tx的增加而减小,但减小的方式强烈依赖于X:对于X=Cu, Hsf的减小是由于Cu和Gd在界面处的相互扩散。对于X=Ag, Au, Pt, Y和W, Hsf的降低被认为是由于交换耦合强度Jco-Gd的降低。对于X= Ag、Au、Pt和Y, Jco-Gd随tx的增加而缓慢下降,当tx≥10A时Jco-Gd保持平稳;另一方面,当X=W时,当tx≥5A时,它迅速减小并消失。我们认为这种差异是由于X的电子结构造成的。
We investigated the indirect exchange coupling between Co and Gd across nonmagnetic interlayers in Co/X/Gd/X multilayers (X=Cu, Ag, Au, Pt, Y, and W). The spin-flop field, Hsf, decrease with increasing interlayer thickness, tx, for all X. However, the manner of the decrease depends strongly on X: For X=Cu, Hsf decreases owing to interdiffusion between Cu and Gd at the interfaces. For X=Ag, Au, Pt, Y, and W, the decrease in Hsf is considered to be due to a decrease in the exchange coupling strength, Jco-Gd. For X= Ag, Au, Pt, and Y, Jco-Gd decreases slowly with increasing tx and remains even for tx≥10A; for X=W, on the other hand, it decreases repidly and disappears for tx≥5A. We consider that the difference is attributable to the electronic structure of X.