Current-Induced Domain-Wall Motion in [CoFe/Pt]5 Nanowire With Perpendicular Magnetic Anisotropy

Title
Current-Induced Domain-Wall Motion in [CoFe/Pt]5 Nanowire With Perpendicular Magnetic Anisotropy
Authors
김갑진이재철조영진이창원신경호서순애이경진이현우최석봉
Keywords
Current induced; domain wall motion; perpendicular magnetic anisotropy; spin transfer torque; thermal activation
Issue Date
2009-10
Publisher
IEEE transactions on magnetics
Citation
VOL 45, NO 10, 3773-3775
Abstract
We experimentally demonstrate the current-induced domain wall motion in [CoFe/Pt]􀀀 nanowire with perpendicular magnetic anisotropy. By use of the scanning MOKE measurement, we observe that two domain walls are moved simultaneously by spin polarized current at the current density of 1.43 x 1012 A/㎡. The domain wall speed is estimated to be about 1.5 m/s, determined by the domain wall displacement (750 nm) and the current pulse duration (500 ns). From in situ resistance measurement, the temperature of the nanowire rises up to 700 K when the domain wall moves at such the high current density.
URI
http://pubs.kist.re.kr/handle/201004/45539
ISSN
0018-9464
Appears in Collections:
KIST Publication > Article
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