Ladder-type magnetic structures in MnAs epitaxial films–measurements and micromagnetic simulations
Ladder-type magnetic structures in MnAs epitaxial films–measurements and micromagnetic simulations
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MnAs 外延薄膜中的梯型磁结构 - 测量和微磁模拟
DOI：
10.1063/1.3005880
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发表时间：
2008
影响因子：
3.2
通讯作者：
H. Akinaga
中科院分区：
文献类型：
--
作者：
T. Manago;H. Akinaga
利用磁力显微镜、克尔显微镜和微磁学模拟研究了GaAs（001）衬底上MnAs薄膜的梯形磁性结构和磁化反转过程。微磁学模拟提供了很好的再现实验结果的梯型结构的MnAs薄膜的recrystals状态和磁化反转过程。模拟的磁化反转过程表明，在MnAs系统中，铁磁条之间的静磁相互作用起着重要的作用，形成这种结构。磁结构对饱和磁化强度和磁各向异性的依赖性表明，为了获得梯型磁结构，需要沿条带沿着的单轴硬磁各向异性、大的饱和磁化强度和大的磁各向异性。
The ladder-type magnetic structure and magnetization reversal process of MnAs films on GaAs(001) were investigated using magnetic force microscopy, Kerr microscopy, and micromagnetic simulations. Micromagnetic simulations provided good reproduction of the experimental results for the ladder-type structure of the MnAs films for remanent states and the magnetization reversal process. The simulated magnetization reversal process shows that magnetostatic interactions between ferromagnetic stripes play an important role to form this structure in the MnAs system. The dependence of the magnetic structure on the saturation magnetization and magnetic anisotropy indicates that uniaxial hard magnetic anisotropy along the strips, a large saturation magnetization, and a large magnetic anisotropy are necessary to obtain the ladder-type magnetic structure.