Oscillatory interlayer exchange coupling in epitaxial Co2MnSi/Cr/Co2MnSi trilayers

被引：28
|
作者：
Wang, H. [1 ]
Sato, A.
Saito, K.
Mitani, S.
Takanashi, K.
Yakushiji, K.
机构：
[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
[2] Natl Inst Adv Ind Sci & Technol, Nanoelect Res Inst, Tsukuba, Ibaraki 3058568, Japan
来源：
APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 14期
基金：
日本学术振兴会;
关键词：
D O I：
10.1063/1.2719606
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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 3.3-3.5 nm. The charecteristics of magnetization curves show that 90 degrees coupling plays a dominant role in IEC between CMS layers. Moreover, the strength of 90 degrees coupling turns out to be very high (up to -1.85 ergs/cm(2)) around the first oscillation peak.
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页数：3
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