Bending strain-tunable magnetic anisotropy in Co2FeAl Heusler thin film on Kapton®
Bending strain-tunable magnetic anisotropy in Co2FeAl Heusler thin film on Kapton®
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DOI：
10.1063/1.4893157
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发表时间：
2014-08-11
影响因子：
4
通讯作者：
Faurie, D.
中科院分区：
文献类型：
--
作者：
Gueye, M.;Wague, B. M.;Faurie, D.
用铁磁共振方法研究了Kapton(R)衬底上生长的20 nm Co2FeAl Heusler薄膜的弯曲效应对薄膜磁各向异性的影响。本文报道的结果表明，通过弯曲薄膜，该系统的磁各向异性发生了很大的变化。这一效应归因于界面应变从衬底到薄膜的传递以及Co2FeAl薄膜的磁弹性行为。此外，还提出了两种方法来确定薄膜的面内磁致伸缩系数，其值接近于波长(CFA)14×10(-6)。(C)2014 AIP出版有限责任公司。
Bending effect on the magnetic anisotropy in 20 nm Co2FeAl Heusler thin film grown on Kapton (R) has been studied by ferromagnetic resonance and glued on curved sample carrier with various radii. The results reported in this Letter show that the magnetic anisotropy is drastically changed in this system by bending the thin films. This effect is attributed to the interfacial strain transmission from the substrate to the film and to the magnetoelastic behavior of the Co2FeAl film. Moreover, two approaches to determine the in-plane magnetostriction coefficient of the film, leading to a value that is close to lambda(CFA) 14 x 10(-6), have been proposed. (C) 2014 AIP Publishing LLC.