Time domain MOKE detection of spin wave modes and precession control for magnetization switching in ferrite films

被引：4
|
作者：
Bauer, M
Lopusnik, R
Dötsch, H
Kalinikos, BA
Patton, CE
Fassbender, J
Hillebrands, B
机构：
[1] Univ Kaiserslautern, Fachbereich Phys, D-67663 Kaiserslautern, Germany
[2] Univ Osnabruck, Fachbereich Phys, D-49069 Osnabruck, Germany
[3] St Petersburg Electrotech Univ, St Petersburg 197376, Russia
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2001年 / 226卷 / PART I期
基金：
美国国家科学基金会;
关键词：
spin waves; spin dynamics; magneto-optics; garnets;
D O I：
10.1016/S0304-8853(00)00992-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The dynamic magnetization response to pulse fields for magnetic garnet films was measured by time-resolved magneto-optical Kerr effect techniques. A damped precession. or ringing, is found when the pulse is turned on or off. The ringing amplitude after turn off shows alternating maxima and minima as the static field is changed. A fast Fourier transform analysis gives peaks at frequencies which match those expected from ferromagnetic and spin wave resonance for fields above 25 Oe. Lower frequency modes indicative of surface anisotropy are also found. The change in intensity with field for the two strongest peaks tracks the variation in the ringing amplitude. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：507 / 509
页数：3
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