Micromagnetic studies on magnetic spectra of submicron ferromagnetic particles with different aspect ratio

被引：3
|
作者：
Chen, Jihong
Chen, Jiangwei
Tang, Dongming [1 ]
Lu, Mu
Lu, Huaixian
机构：
[1] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
来源：
PHYSICS LETTERS A | 2010年 / 374卷 / 04期
关键词：
Resonance frequency; Susceptibility; Micromagnetic simulation; RESONANCE; DYNAMICS; MODES;
D O I：
10.1016/j.physleta.2009.11.029
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Two resonance modes occur when the magnetic spectra of rectangular ferromagnetic particles with different aspect ratio are studied using micromagnetic simulation. The intensity of the higher mode is stronger when the particles have the aspect ratio larger than 1.6. When the aspect ratio reduces to 1.6, only one strong resonance peak remains with some tiny satellite peaks appeared. These behaviors are attributed to the competition between the exchange interaction and dipolar coupling, which has different result in the edge and middle part, respectively. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：620 / 624
页数：5
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