Controlled domain wall injection into ferromagnetic nanowires from an optimized pad geometry
Controlled domain wall injection into ferromagnetic nanowires from an optimized pad geometry
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DOI：
10.1063/1.2753541
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发表时间：
2007-07-09
影响因子：
4
通讯作者：
Gentils, A.
中科院分区：
文献类型：
--
作者：
McGrouther, D.;McVitie, S.;Gentils, A.
作者提出了一种改进的几何形状的微米级垫注入的涡旋畴壁（VDW）到铁磁纳米线。垫支持一个单一的涡旋磁化状态，其手征可以简单地控制沿着特定方向的场饱和。我们表明，使用洛伦兹透射电子显微镜，利用这样的垫允许VDW的手性注入到所附的线是预定的。此外，焊盘涡流状态是高度稳定的，并且经受住了VDW从位于沿导线沿着一定距离处的非对称凹口的重复注入和脱钉。(C)2007年，美国物理学会。
The authors present an improved geometry for a micron-scale pad for the injection of vortex domain walls (VDWs) into ferromagnetic nanowires. The pad supports a single vortex magnetization state, the chirality of which can be controlled simply by field saturation along a specific direction. We show, using Lorentz transmission electron microscopy, that utilization of such pads allows the chirality of VDWs injected into the attached wire to be predetermined. Furthermore, the pad vortex state is highly stable and survives repeated injection and depinning of VDWs from an asymmetric notch located some distance along the wire. (C) 2007 American Institute of Physics.