Quantitative analysis of magnetic excitations in Landau flux-closure structures using synchrotron-radiation microscopy

被引：125

作者：

Raabe, J ^{[1
]}

Quitmann, C

Back, CH

Nolting, F

Johnson, S

Buehler, C

机构：

[1] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[2] Univ Regensburg, Inst Expt Phys, D-93040 Regensburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.94.217204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured the excitation spectrum of six micron magnetic squares using x-ray magnetic circular dichroism. We observe all three excitations expected in a Landau flux-closure pattern. High temporal and spatial resolution allows quantitative analysis of the excitations. A short magnetic in plane pulse excites the magnetic element and we observe precessional motion of the magnetization within the domains as well as a domain wall mode and vortex motion. The vortex moves perpendicular to the excitation field and relaxes without showing a circulating orbit.

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页数：4

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