Magnetic properties of ferrimagnetic Tb/CoFeB/MgO films
Magnetic properties of ferrimagnetic Tb/CoFeB/MgO films
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DOI：
10.7567/1882-0786/ab2c23
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发表时间：
2019-07
影响因子：
2.3
通讯作者：
Y. Shiota;T. Moriyama;T. Ono
中科院分区：
文献类型：
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作者：
Y. Shiota;T. Moriyama;T. Ono
研究了Tb/CoFeB/MgO薄膜的垂直磁各向异性（PMA）和磁化补偿温度（TM）。Tb和CoFeB层之间的层间反铁磁耦合使得包含CoFeB/MgO结的有用的反铁磁性质成为可能，这对于获得巨隧道磁电阻和磁各向异性的电压控制的实际应用是重要的。而PMA主要是由于在CoFeB/MgO的界面，TM可以控制的Tb和CoFeB层的厚度比，因为它们的磁矩是反铁磁耦合。我们的研究结果提供了许多可能性，以增加令人兴奋的新功能的亚铁磁自旋电子学。
We studied perpendicular magnetic anisotropy (PMA) and magnetization compensation temperature (TM) in Tb/CoFeB/MgO films. Interlayer antiferromagnetic coupling between Tb and CoFeB layers enables useful antiferromagnetic properties containing a CoFeB/MgO junctions, which are important for the practical applications to obtain giant tunnel magnetoresistance and voltage-control of magnetic anisotropy. While the PMA is mainly attributed to the interface at CoFeB/MgO, TM can be controlled by the thickness ratio of Tb and CoFeB layers as the magnetic moments of them are antiferromagnetically coupled. Our results provide many possibilities to add exciting new functions to ferrimagnetic spintronics.