Modulation of Magnetic Anisotropy in Flexible Multiferroic FeGa/PVDF Heterostructures Under Various Strains

Modulation of Magnetic Anisotropy in Flexible Multiferroic FeGa/PVDF Heterostructures Under Various Strains
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不同应变下柔性多铁性 FeGa/PVDF 异质结构磁各向异性的调制

DOI:
10.1109/tmag.2015.2436413
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发表时间:
2015-05
影响因子:
2.1
通讯作者:
Run-Wei Li
Run-Wei Li
中科院分区:
工程技术4区
文献类型:
--
作者:
Bin Chen;D;an Sun;D;an Sun;Run-Wei Li

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控制不同应变状态下的磁各向异性对于柔性自旋电子器件中磁化强度的操纵是重要的。本文研究了不同压缩应变下柔性Fe 81 Ga 19(FeGa)/聚偏氟乙烯多铁性异质结构的磁场控制。初始单轴磁各向异性随压应变的增加而增强。当应变大于0.06%时,电场只能改变磁各向异性的强度而不能改变其方向。当应变小于0.06%时,267 kV/cm的电场可使易磁化轴偏转90°。这些结果有助于设计具有合适初始应变的柔性多铁性器件,以实现90°磁化重取向。
Control of the magnetic anisotropy under different strain states is important for the manipulation of magnetization in flexible spintronic devices. Here, the electric field control of magnetic anisotropy was investigated in flexible Fe81Ga19(FeGa)/polyvinylidene fluoride multiferroic heterostructures under different compressive strains. The initial uniaxial magnetic anisotropy is enhanced with increasing the compressive strain. When the strain is larger than 0.06%, the electric field can only change the strength of the magnetic anisotropy but cannot change its direction. When the strain is smaller than 0.06%, the electric field of 267 kV/cm can reorientate the easy axis by 90°. The present results may be helpful for designing flexible multiferroic devices with a suitable initial strain in order to realize the 90° reorientation of the magnetization.
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