Single domain wall dynamics in ferromagnetic wire with circular magnetization and conductive cover

被引:0
|
作者
Kravcak, J. [1 ]
机构
[1] Tech Univ Kosice, Fac Elect Engn & Informat, Dept Phys, Kosice 04200, Slovakia
关键词
Domain wall mobility; Eddy currents; Ferromagnetic wire; Circular magnetization reversal; Maxwell equations;
D O I
10.1016/j.physb.2014.07.066
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The circular magnetization reversal process in a long ferromagnetic wire with a non-ferromagnetic conductive cover is theoretically analysed. The model of a single thin rigid 180 degrees domain wall (DW) is used so that the wire is divided crosswise into two magnetic domains with opposite circular magnetization. It is presumed that after switching on direct electric current in the wire, the circular magnetization reversal occurs by means of the DW movement through the wire. The induced electric field and the eddy current power losses in all conductive parts are calculated in the model, from which the DW rnobility is determined. It is shown that DW mobility is very sensitive to the thickness and the conductivity of the non-ferromagnetic cover. An experimental procedure for measuring DW mobility through the non-ferromagnetic conductive cover is proposed. (C) 2014 Elsevier B.V. All rights reserved
引用
收藏
页码:98 / 101
页数:4
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