Magnetic anisotropy engineering: Single-crystalline Fe films on ion eroded ripple surfaces
Magnetic anisotropy engineering: Single-crystalline Fe films on ion eroded ripple surfaces
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DOI：
10.1063/1.4729151
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发表时间：
2012-06
影响因子：
4
通讯作者：
M. Liedke;M. Körner;K. Lenz;F. Grossmann;S. Facsko;J. Fassbender
中科院分区：
文献类型：
--
作者：
M. Liedke;M. Körner;K. Lenz;F. Grossmann;S. Facsko;J. Fassbender
我们提出了一种在MgO(001)上预选单晶Fe薄膜中感生的面内单轴磁各向异性(UMA)方向的方法。利用离子束辐照技术在纳米尺度上调制具有周期性波纹的MgO(001)表面。波纹方向决定了UMA的取向，而Fe薄膜的本征立方各向异性不受影响。因此，有可能叠加几度精度的面内UMA--这种控制水平到目前为止还没有报道，例如在自旋电子学中可能是相关的。
We present a method to preselect the direction of an induced in-plane uniaxial magnetic anisotropy (UMA) in thin single-crystalline Fe films on MgO(001). Ion beam irradiation is used to modulate the MgO(001) surface with periodic ripples on the nanoscale. The ripple direction determines the orientation of the UMA, whereas the intrinsic cubic anisotropy of the Fe film is not affected. Thus, it is possible to superimpose an in-plane UMA with a precision of a few degrees—a level of control not reported so far that can be relevant for example in spintronics.