DocumentCode :
1450160
Title :
Current-Induced Domain-Wall Motion in [CoFe/Pt] 
Nanowire With Perpendicular Magnetic Anisotropy
Author :
Kim, Kab-Jin ; Lee, Jae-Chul ; Cho, Young Jin ; Lee, Chang-Won ; Shin, Kyung-Ho ; Seo, Sunae ; Lee, Kyung-Jin ; Lee, Hyun-Woo ; Choe, Sug-Bong
Author_Institution :
Sch. of Phys., Seoul Nat. Univ., Seoul, South Korea
Volume :
45
Issue :
10
fYear :
2009
Firstpage :
3773
Lastpage :
3775
Abstract :
We experimentally demonstrate the current-induced domain wall motion in [CoFe/Pt]5 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 times 1012 A/m2. 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.
Keywords :
Kerr magneto-optical effect; cobalt alloys; current density; ferromagnetic materials; iron alloys; magnetic domain walls; magnetic multilayers; magnetic thin films; nanowires; perpendicular magnetic anisotropy; platinum; spin polarised transport; sputter deposition; tantalum; Ta-Pt-[CoFe-Pt]5; current density; current pulse duration; current-induced domain-wall motion; dc-magnetron sputtering; ferromagnetic nanowires; multilayered films; perpendicular magnetic anisotropy; scanning MOKE measurement; size 750 nm; spin polarized current; time 500 ns; Current induced; domain wall motion; perpendicular magnetic anisotropy; spin transfer torque; thermal activation;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2009.2025605
Filename :
5257156
Link To Document :
