Magnetic localization in transition-metal nanowires

被引:141
作者
Skomski, R [1 ]
Zeng, H
Zheng, M
Sellmyer, DJ
机构
[1] Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA
[2] Univ Nebraska, Ctr Mat Res & Anal, Lincoln, NE 68588 USA
来源
PHYSICAL REVIEW B | 2000年 / 62卷 / 06期
关键词
D O I
10.1103/PhysRevB.62.3900
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Magnetization reversal in transition-metal nanowires is investigated. Model calculations explain why magnetization reversal is localized, as opposed to the sometimes assumed delocalized coherent-rotation and curling modes. The localization is a quite general phenomenon caused by morphological inhomogenities and occurring in both polycrystalline and single-crystalline wires. In the polycrystalline limit, the competition between interatomic exchange and anisotropy gives rise to a variety of random-anisotropy effects, whereas nearly single-crystalline wires exhibit a weak localization of the nucleation mode. Model predictions are used to explain the coercive and magnetic-viscosity behavior of Co (and Ni) nanowires electrodeposited in self-assembled alumina pores.
引用
收藏
页码:3900 / 3904
页数:5
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