Anisotropic magnetomechanical effect in Tb0.3Dy0.7Fe2 alloy
Anisotropic magnetomechanical effect in Tb0.3Dy0.7Fe2 alloy
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DOI：
10.1016/j.jmmm.2011.08.007
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发表时间：
2012
影响因子：
2.7
通讯作者：
Hui Zhang
中科院分区：
文献类型：
--
作者：
Hui Zhang
本文基于三维Stoner-Wohlfarth模型，采用自由能最小化方法，研究了Tb_（0.3）Dy_（0.7）Fe_（22）合金在沿着不同晶轴方向的压应力作用下的磁畴旋转。揭示了压应力引起的磁畴转动和应变与应力方向的关系。研究发现，各向异性磁力效应是由应力诱导各向异性对应力方向的依赖性引起的。这一研究对于更好地理解磁致伸缩材料在应力和磁场作用下的磁行为具有重要意义。
In this paper, domain rotations in Tb0.3Dy0.7Fe2alloy under a compressive stress applied along various crystallographic axes alone have been investigated on the basis of 3D Stoner–Wohlfarth model by following the conventional free energy minimization procedure. The dependence of both the domain rotations and the strains caused by the compressive stress on the stress directions has been revealed. And it has been found that the anisotropic magnetomechanical effect arises from the dependence of the stress induced anisotropy on the stress direction. This study is very helpful for the better understanding of magnetic behavior of magnetostrictive materials under both stress and field.