Analysis of the effect of gallium content on the magnetomechanical behavior of single-crystal FeGa alloys using an energy-based model
Analysis of the effect of gallium content on the magnetomechanical behavior of single-crystal FeGa alloys using an energy-based model
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DOI：
10.1088/0964-1726/17/2/025027
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发表时间：
2008-04-01
影响因子：
4.1
通讯作者：
Cullen, James R.
中科院分区：
文献类型：
--
作者：
Atulasimha, Jayasimha;Flatau, Alison B.;Cullen, James R.
具有不同镓含量的单晶铁镓合金的磁力学行为被发现强烈依赖于Ga含量（Atulasimha 2006博士论文）。采用基于能量的模型（Atulasimha 2006 PhD Thesis，Armstrong and William 1997 J.Appl.Phys.812321）来模拟显著不同的致动行为（在不同压缩应力下的B-H和B-H曲线），并针对19、24.7和29 at.%的实验数据进行验证。Ga，[ 100]取向，慢冷单晶FeGa合金。镓含量对模型参数的影响，特别是立方磁晶各向异性常数和Armstrong平滑因子Ω，它们的物理意义，并最终对磁力学行为的影响进行了分析和解释。
The magnetomechanical behavior of single-crystal iron-gallium alloys with varying gallium content was found to be strongly dependent on the Ga content (Atulasimha 2006 PhD Thesis). An energy-based model ( Atulasimha 2006 PhD Thesis, Armstrong and William 1997 J. Appl. Phys. 81 2321) is employed to simulate the strikingly different actuation behavior (lambda-H and B-H curves under different compressive stresses) and validated against experimental data for 19, 24.7 and 29 at.% Ga, [ 100] oriented, slow-cooled single-crystal FeGa alloys. The effect of gallium content on the model parameters, specifically the cubic magnetocrystalline anisotropy constants and the Armstrong-smoothing factor Omega, their physical significance and ultimately their effect on the magnetomechanical behavior are analyzed and explained.