A phenomenological theory of damping in ferromagnetic materials

被引：1994

作者：

Gilbert, TL

机构：

[1] Armour Res Fdn, Chicago, IL 60616 USA

[2] Argonne Natl Lab, Argonne, IL 60439 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2004年 / 40卷 / 06期

关键词：

ferromagnetic damping; ferromagnetic materials; magnetic core memories; magnetic domains; magnetic losses; magnetic recording; magnetization processes;

D O I：

10.1109/TMAG.2004.836740

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：

In 1955, a phenomenological theory of ferromagnetism was well established and had been corroborated by a considerable amount of experimental data. However, there were problems in the phenomenological theory of the dynamics of the magnetization field. The Landau-Lifshitz equation for damping of the motion of the magnetization field could not account for the large noneddy-current damping in thin Permalloy sheets. The problem undertaken herein is a reformulation of the theory in a way that is more consistent with the theory of damping in other physical systems in order to be able to take large damping into account.

引用

页码：3443 / 3449

页数：7

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