Current-Driven Domain-Wall Depinning in Pt/CoFe/Pt Nanowires with Perpendicular Magnetic Anisotropy

被引：4
|
作者：
Kim, Kab-Jin [1 ]
Lee, Jae-Chul [1 ]
Choe, Sug-Bong [1 ]
机构：
[1] Seoul Natl Univ, Dept Phys, Seoul 151742, South Korea
来源：
JOURNAL OF MAGNETICS | 2009年 / 14卷 / 03期
关键词：
spin transfer torque; domain wall motion; perpendicular magnetic anisotropy;
D O I：
10.4283/JMAG.2009.14.3.101
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The spin transfer torque efficiency was determined experimentally by observing the current-driven domain-wall depinning of PdCoFe/Pt nanowires with perpendicular magnetic anisotropy. The depinning time was exponentially proportional to the applied magnetic field, and was well explained by the Neel-Brown formula. The depinning time and threshold magnetic field were varied considerably by injecting current into the nanowire. The spin transfer torque efficiency was estimated to be (7.2 +/- 0.9) x 10(-15) Tm-2/A from the linear dependence of the threshold current density with respect to the applied magnetic field.
引用
收藏
页码：101 / 103
页数：3
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