Compositional dependence of magnetoresistance in TbFeCo amorphous films
Compositional dependence of magnetoresistance in TbFeCo amorphous films
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DOI：
10.1109/intmag.2005.1463436
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
M.T. Rahman;X. Liu;M. Matsumoto;A. Morisako
中科院分区：
文献类型：
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作者：
M.T. Rahman;X. Liu;M. Matsumoto;A. Morisako
较大的单轴磁各向异性使TbFeCo非晶薄膜成为研究其磁输运性质的良好样品之一。TbFeCo非晶薄膜的室温正磁阻效应已有报道。然而，磁阻的起源仍然是个疑问。本文研究了成分变化对TbFeCo薄膜磁输运性能的影响。还阐明了磁阻的起源。已经观察到Tb含量对MR比的显著影响，这被认为是由于磁畴壁宽度随Tb含量的变化而变化。磁流变归因于磁畴壁上的自旋相关散射。
Large uniaxial magnetic anisotropy enables the TbFeCo amorphous films as one of the good samples for studying its magnetotransport properties. The room temperature positive magnetoresistance (MR) in TbFeCo amorphous film has already been reported. However, the origin of the magnetoresistance is still doubtful. In this study, the effects of compositional change on the magnetotransport properties of TbFeCo films have been investigated. The origin of the magnetoresistance is also clarified. A significant effect of Tb content on the MR ratio has been observed which is believed to be due to the variation of domain wall width as a function of Tb content. The MR is attributable to the spin-dependent scattering at the domain wall.