Influence of Dipolar Interaction on Vortex Dynamics in Arrays of Ferromagnetic Disks

被引：104

作者：

Vogel, Andreas ^{[1
,2
]}

Drews, Andre ^{[1
,2
,3
]}

Kamionka, Thomas ^{[1
,2
]}

Bolte, Markus ^{[1
,2
,3
]}

Meier, Guido ^{[1
,2
]}

机构：

[1] Univ Hamburg, Inst Angew Phys, D-20355 Hamburg, Germany

[2] Univ Hamburg, Zentrum Mikrostrukturforsch, D-20355 Hamburg, Germany

[3] Univ Hamburg, Arbeitsbereich Tech Informat Syst, D-22527 Hamburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 03期

关键词：

PERMALLOY; DOTS;

D O I：

10.1103/PhysRevLett.105.037201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The influence of the magnetostatic interaction on vortex dynamics in arrays of ferromagnetic disks is investigated by means of a broadband ferromagnetic-resonance setup. Transmission spectra reveal a strong dependence of the resonance frequency of vortex-core motion on the ratio between the center-to-center distance and the element size. For a decreasing ratio, a considerable broadening of the absorption peak is observed following an inverse sixth power law. An analogy between the vortex system and rotating dipoles is confirmed by micromagnetic simulations.

引用

页数：4

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