Current-Induced Domain-Wall Motion in [CoFe/Pt]5 Nanowire With Perpendicular Magnetic Anisotropy
- Current-Induced Domain-Wall Motion in [CoFe/Pt]5 Nanowire With Perpendicular Magnetic Anisotropy
- 김갑진; 이재철; 조영진; 이창원; 신경호; 서순애; 이경진; 이현우; 최석봉
- Current induced; domain wall motion; perpendicular magnetic anisotropy; spin transfer torque; thermal activation
- Issue Date
- IEEE transactions on magnetics
- VOL 45, NO 10, 3773-3775
- 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.
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