HIGH-POWER FERROMAGNETIC-RESONANCE WITHOUT A DEGENERATE SPIN-WAVE MANIFOLD

被引：39

作者：

MCMICHAEL, RD

WIGEN, PE

机构：

[1] Department of Physics, Ohio State University, Columbus

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 64卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.64.64

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The nonlinear dynamics of the main magnetoexchange branch of a circular thin (0.45 m) film of yttrium iron garnet are investigated at perpendicular resonance. Distinct fingers of auto-oscillation arise from each magnetoexchange mode in the low-power spectrum. A set of equations of motion derived from a microscopic Hamiltonian are integrated to compare with experiment. In the first finger, the model predicts the power for onset of auto-oscillation to within 1 dB of the experiment and the frequency to within 15%. © 1990 The American Physical Society.

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页码：64 / 67

页数：4

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