Domain wall configuration and magneto-transport properties in dual spin-valve with nanoconstriction
Domain wall configuration and magneto-transport properties in dual spin-valve with nanoconstriction
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DOI：
10.1063/1.4729126
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发表时间：
2012-06
影响因子：
4
通讯作者：
B. Chun;Han-Chun Wu;S. Noh;I. Chu;S. Serrano-Guisan;C. Hwang;I. Shvets;Z. Liao;M. Abid;Y. K. Kim
中科院分区：
文献类型：
--
作者：
B. Chun;Han-Chun Wu;S. Noh;I. Chu;S. Serrano-Guisan;C. Hwang;I. Shvets;Z. Liao;M. Abid;Y. K. Kim
研究了外场对纳米缩窄合成反铁磁双自旋阀磁输运特性的影响，重点研究了畴壁构型和磁化反转过程。当磁场沿硬轴构型由面内向面外旋转时，磁化反转模式由涡旋型转变为横向型，并随着DW向高各向异性区推进，出现了横向磁化反转模式的多步切换过程。纳米缩窄形状的差异对DW的传播形成了不对称的能垒，从而形成了不对称的脱剥落场。
We investigated the effect of external field on magneto-transport properties of synthetic antiferromagnet dual spin-valve with nanoconstriction with focus on domain wall (DW) configuration and magnetization reversal process. As magnetic field rotated from in-plane to out-of-plane along hard axis configuration, the magnetization reversal mode changed from a vortex to a transverse type, and a multistep switching process appeared due to the development of a transverse magnetization reversal mode with DW pushing towards the higher anisotropy region. The difference in the shape of nanoconstriction made an asymmetric energy barrier to the DW propagation which resulted in an asymmetry depinning field.