Definition of Magnetic Exchange Length

被引:181
作者
Abo, Gavin S. [1 ,2 ]
Hong, Yang-Ki [1 ,2 ]
Park, Jihoon [1 ,2 ]
Lee, Jaejin [1 ,2 ]
Lee, Woncheol [1 ,2 ]
Choi, Byoung-Chul [3 ]
机构
[1] Univ Alabama, Dept Elect & Comp Engn, Tuscaloosa, AL 35487 USA
[2] Univ Alabama, MINT Ctr, Tuscaloosa, AL 35487 USA
[3] Univ Victoria, Dept Phys & Astron, Victoria, BC V8W 3P6, Canada
关键词
Characteristic length; critical size; exchange length; magnetics; magnetism in solids; REVERSAL; FIELDS; MEDIA; SIZE;
D O I
10.1109/TMAG.2013.2258028
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The magnetostatic exchange length is an important parameter in magnetics as it measures the relative strength of exchange and self-magnetostatic energies. Its use can be found in areas of magnetics including micromagnetics, soft and hard magnetic materials, and information storage. The exchange length is of primary importance because it governs the width of the transition between magnetic domains. Unfortunately, there is some confusion in the literature between the magnetostatic exchange length and a similar distance concerning magnetization reversal mechanisms in particles known as the characteristic length. This confusion is aggravated by the common usage of two different systems of units, SI and cgs. This paper attempts to clarify the situation and recommends equations in both systems of units.
引用
收藏
页码:4937 / 4939
页数:3
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