MODULATIONAL INSTABILITY OF SURFACE MAGNETOSTATIC WAVES IN FERROMAGNETIC-FILMS

被引：20
|
作者：
NIKITOV, SA
JUN, S
MARCELLI, R
DEGASPERIS, P
机构：
[1] RUHR UNIV BOCHUM,AG FESTKORPERSPEKT,D-44780 BOCHUM,GERMANY
[2] HUAZHONG UNIV SCI & TECHNOL,DEPT SOLID STATE ELECTR,WUHAN 430074,PEOPLES R CHINA
[3] CNR,IST ELECTTRON STATO SOLIDO,I-00156 ROME,ITALY
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1995年 / 145卷 / 1-2期
关键词：
D O I：
10.1016/0304-8853(94)01699-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A modulational instability of the surface magnetostatic wave has been experimentally observed. It was found that, in the spectrum of an intense magnetostatic wave propagating in an in-plane magnetized yttrium-iron-garnet film with a single metallic ground plane, symmetric satellite frequencies appeared when the power of the initial wave was above a certain threshold value. Three-magnon decay processes having a low power threshold with respect to four-magnon self-action processes were forbidden by the conservation laws for the momentum and energy. The calculated modulation frequency and power threshold are in a good agreement with measured values.
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收藏
页码：L6 / L10
页数：5
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