Oscillatory interlayer exchange coupling in epitaxial Co2MnSi∕Cr∕Co2MnSi trilayers
Oscillatory interlayer exchange coupling in epitaxial Co2MnSi∕Cr∕Co2MnSi trilayers
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DOI：
10.1063/1.2719606
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发表时间：
2007-04
影响因子：
4
通讯作者：
H. Wang;A. Sato;Kyosuke Saito;S. Mitani;K. Takanashi;K. Yakushiji
中科院分区：
文献类型：
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作者：
H. Wang;A. Sato;Kyosuke Saito;S. Mitani;K. Takanashi;K. Yakushiji
研究了由一个完整的Heusler Co_2MnSi（CMS）相作为铁磁层并由一个Cr间隔层隔开的三层膜中的层间交换耦合（IEC）。磁化曲线的形状随Cr的厚度变化呈现出异常的振荡行为。振荡周期为3.3-3.5nm。磁化曲线特征表明，CMS层间的90°耦合在IEC中起主导作用。此外，90°耦合的强度在第一个振荡峰附近非常高（高达-1.85ergsscincm 2）。
Interlayer exchange coupling (IEC) in trilayers, which consist of a full Heusler Co2MnSi (CMS) phase as ferromagnetic layers separated by a Cr spacer layer, has been investigated. The shape of magnetization loops shows unusual oscillatory behavior with the thickness of Cr. The oscillation period is about 3.3–3.5nm. The charecteristics of magnetization curves show that 90° coupling plays a dominant role in IEC between CMS layers. Moreover, the strength of 90° coupling turns out to be very high (up to −1.85ergs∕cm2) around the first oscillation peak.