Micromagnetic calculations of eddy currents with time-varying fields

被引：0
|
作者：
Yanik, L [1 ]
Della Torre, E
Donahue, MJ
机构：
[1] George Washington Univ, Inst Magnet Res, Washington, DC 20052 USA
[2] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA
来源：
PHYSICA B-CONDENSED MATTER | 2006年 / 372卷 / 1-2期
关键词：
micromagnetism; eddy currents; domain wall;
D O I：
10.1016/j.physb.2005.10.069
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
This paper extends a recently presented program for solving the eddy current problem in a cylindrical geometry, by investigating the effect of time-varying fields. When the applied field is turned off, wall motion slows by several orders of magnitude, but since the wall energy can be reduced by reducing the length of the wall, it continues to move, albeit much more slowly. Reversing the applied field has the effect of nucleating the opposite kind of wall which propagates inward and eventually annihilates the previous wall. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：290 / 293
页数：4
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