Current-induced effective field in perpendicularly magnetized Ta/CoFeB/MgO wire
Current-induced effective field in perpendicularly magnetized Ta/CoFeB/MgO wire
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DOI：
10.1063/1.3579155
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发表时间：
2011-04-04
影响因子：
4
通讯作者：
Ohno, H.
中科院分区：
文献类型：
--
作者：
Suzuki, T.;Fukami, S.;Ohno, H.
研究了垂直磁化Ta/CoFeB/MgO线中电流感应的有效场。通过测量不同偏置电流下霍尔电阻的阈值场随磁场的变化曲线，发现阈值场减小了6.4 kOe/mA。减小的原因可能是面内有效场，主要是由于Rashba效应。与先前报道的Pt/Co/AlO(x)相比，Ta/CoFeB/MgO线的有效场更小，方向相反。(C) 2011年美国物理研究所。(doi: 10.1063/1.3579155)
The current-induced effective field in perpendicularly magnetized Ta/CoFeB/MgO wire was investigated. A threshold field decrease of 6.4 kOe/mA was observed by measuring the threshold field of Hall resistance versus the magnetic field curve with various bias currents. The decrease was probably caused by the in-plane effective field, mainly due to the Rashba effect. The effective field of the Ta/CoFeB/MgO wire was smaller and opposite in direction compared to that of Pt/Co/AlO(x) previously reported. (C) 2011 American Institute of Physics. [doi:10.1063/1.3579155]