Exchange anisotropy of MBE grown Mn1−xPtx/NiFe bilayers with (0 0 1) orientation
Exchange anisotropy of MBE grown Mn1−xPtx/NiFe bilayers with (0 0 1) orientation
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MBE 生长的 Mn1−xPtx/NiFe 双层（0 0 1）取向的交换各向异性
DOI：
10.1016/j.jmmm.2003.12.385
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发表时间：
2004
影响因子：
2.7
通讯作者：
S. Tsunashima
中科院分区：
文献类型：
--
作者：
T. Kume;Y. Sugiyama;T. Kato;S. Iwata;S. Tsunashima
研究了在磁场沿着[100]或[110]方向上生长的具有（001）取向的Mn 1 −xPtx（x=0.06-0.40）/NiFe外延双层膜的交换各向异性。该双层膜在未经热处理的情况下表现出较大的交换偏置场。单向各向异性的易磁化方向与外加电场方向无关，总是平行于晶轴的[110]方向。磁各向异性转矩曲线包含较强的四重对称分量，其幅值远大于NiFe单层的幅值。
Exchange anisotropy was investigated for Mn1−xPtx(x=0.06–0.40)/NiFe epitaxial bilayers with (001) orientation grown applying a magnetic field along either [100] or [110]. The bilayers exhibited a large exchange bias field without heat treatment. The easy direction of the unidirectional anisotropy was independent of the applied field direction and always parallel to [110] direction of the crystal axis. The magnetic anisotropy torque curves contain strong 4-fold symmetry component whose amplitude is much larger than that of NiFe single layers.