Magnetic field insensitivity of magnetic domain wall velocity induced by electrical current in Co/Ni nanowire
Magnetic field insensitivity of magnetic domain wall velocity induced by electrical current in Co/Ni nanowire
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DOI：
10.1063/1.3590713
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发表时间：
2011-05
影响因子：
4
通讯作者：
T. Koyama;D. Chiba;K. Ueda;H. Tanigawa;S. Fukami;Tetsuhiro Suzuki;N. Ohshima;N. Ishiwata;Y. Nakatani;T. Ono
中科院分区：
文献类型：
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作者：
T. Koyama;D. Chiba;K. Ueda;H. Tanigawa;S. Fukami;Tetsuhiro Suzuki;N. Ohshima;N. Ishiwata;Y. Nakatani;T. Ono
本文研究了具有垂直磁各向异性的Co/Ni纳米线在电流诱导下的磁畴壁运动速度。DW速度随电流密度的增大而增大，最大速度为60 m/s。此外，在−50 ~ +50 Oe范围内，DW速度几乎与外部垂直磁场无关。本文还讨论了观察到的电流诱导DW运动场不敏感的机理。
We have investigated the velocity of magnetic domain wall (DW) motion induced by electric currents in a Co/Ni nanowire with a perpendicular magnetic anisotropy. The DW velocity increased as current density increased and the maximum velocity of 60 m/s was observed. Furthermore, the DW velocity was found to be almost independent of external perpendicular magnetic fields in the range of −50 to +50 Oe. The mechanism of the observed field insensitivity of the current induced DW motion is also discussed.