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.

引用

页码：L6 / L10

页数：5

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