Effect of buffer layer and external stress on magnetic properties of flexible FeGa films
Effect of buffer layer and external stress on magnetic properties of flexible FeGa films
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缓冲层和外应力对柔性FeGa薄膜磁性能的影响
DOI：
10.1063/1.4793602
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发表时间：
2013-05-07
影响因子：
3.2
通讯作者：
Li, Run-Wei
中科院分区：
文献类型：
--
作者：
Zhang, Xiaoshan;Zhan, Qingfeng;Li, Run-Wei
我们系统地研究了Ta缓冲层和外部应力对柔性聚对苯二甲酸乙二醇酯（PET）衬底上磁致伸缩Fe81Ga19薄膜磁性能的影响。Ta缓冲层能有效地光滑PET粗糙表面。结果表明，与直接生长在PET衬底上的薄膜相比，生长在Ta缓冲层上的FeGa薄膜表现出较弱的单轴磁各向异性和较低的矫顽力。通过向内和向外弯曲FeGa/Ta/PET样品，向外施加平面内压应力和拉伸应力。由于FeGa的逆磁致伸缩效应，FeGa/Ta薄膜的矫顽力和磁滞回线的平方度在不同应变下都可以很好地调节。
We systematically investigated the effect of a Ta buffer layer and external stress on the magnetic properties of magnetostrictive Fe81Ga19 films deposited on flexible polyethylene terephthalate (PET) substrates. The Ta buffer layers could effectively smoothen the rough surface of PET. As a result, the FeGa films grown on Ta buffer layers exhibit a weaker uniaxial magnetic anisotropy and lower coercivity, as compared to those films directly grown on PET substrates. By inward and outward bending the FeGa/Ta/PET samples, external in-plane compressive and tensile stresses were applied to the magnetic films. Due to the inverse magnetostrictive effect of FeGa, both the coercivity and squareness of hysteresis loops for FeGa/Ta films could be well tuned under various strains.