摘要
将文献[4]的理论结果加以推广,用微扰理论导出了微波场作用下铁磁材料的动态非线性磁化强度的各阶近似表达式。严格分析了在波矢k与外偏置磁场H_0成任意角度时非线性静磁表面波的传播特性。证明了静磁表面波在任何传播方向上都不能演化为静磁孤子。
The dynamic nonlinear magnetization of different order induced by microwaves in a ferromagnetic material is derived by using perturbation theory. The characteristics of the nonlinear magnetostatic surface wave with wavevector k, making an arbitrary angle to the bias magnetic field, is analysed rigorously. We conclude that the envelope magnetostatic surface solitons in ferromagnetic films can not be generated in all possible direction of propagation.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1993年第12期2005-2013,共9页
Acta Physica Sinica
基金
国家自然科学基金
关键词
静磁表面波
传播
铁磁材料
Ferromagnetic materials
Magnetization
Microwaves
