Magnetic vortex core observation in circular dots of permalloy

被引：1203
|
作者：
Shinjo, T [1 ]
Okuno, T
Hassdorf, R
Shigeto, K
Ono, T
机构：
[1] Kyoto Univ, Chem Res Inst, Uji, Kyoto 6110011, Japan
[2] Keio Univ, Fac Sci & Technol, Yokohama, Kanagawa 2238522, Japan
来源：
SCIENCE | 2000年 / 289卷 / 5481期
关键词：
D O I：
10.1126/science.289.5481.930
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Spin structures of nanoscale magnetic dots are the subject of increasing scientific effort, as the confinement of spins imposed by the geometrical restrictions makes these structures comparable to some internal characteristic Length scales of the magnet. For a vortex (a ferromagnetic dot with a curling magnetic structure), a spot of perpendicular magnetization has been theoretically predicted to exist at the center of the vortex. Experimental evidence for this magnetization spot is provided by magnetic force microscopy imaging of circular dots of permalloy (Ni80Fe20) 0.3 to 1 micrometer in diameter and 50 nanometers thick.
引用
收藏
页码：930 / 932
页数：3
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