Reversal Domain Wall Motion in Perpendicular Magnetized Tb-Fe-Co nanowires
Reversal Domain Wall Motion in Perpendicular Magnetized Tb-Fe-Co nanowires
复制标题
垂直磁化 Tb-Fe-Co 纳米线中的反转畴壁运动
DOI：
10.1109/tmag.2013.2252003
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发表时间：
2013
影响因子：
2.1
通讯作者：
and Hiroyuki Awano
中科院分区：
文献类型：
--
作者：
Do Bang;and Hiroyuki Awano
我们研究了SiO_2/TbFeCo/Pt(非对称)纳米线和Pt/TbFeCo/Pt(对称)纳米线中磁畴壁的运动。在零场和室温下，非对称线中观察到了DW的反向运动。DW的反向运动归因于非对称线的结构反转不对称引起的自旋-轨道扭矩，它们分别来自于非对称线的界面和铂层。当电流密度大于1.52×1011A/m2时，DW速度符号再次反转，对应于Walker击穿电流密度的阈值。
We studied the motion of magnetic domain walls (DWs) in SiO2/TbFeCo/Pt (asymmetric) and Pt/TbFeCo/Pt (symmetric) nanowires. The reversed DW motion was observed in the asymmetric wire at zero field and room temperature. The reversed DW motion was attributed to the structural inversion asymmetry-induced spin-orbit torques from Pt/TbFeCo interface and Pt layer of the asymmetric wire. The DW velocity sign was again reversed when the current density is larger than 1.52 × 1011A/m2which corresponds to threshold of Walker-breakdown current density.