摘要
我们用关联有效场理论研究了亚铁磁 /非磁性超晶格的体模式和表面静磁模式 (等效介质理论的适用范围λ P,λ和 P分别为自旋波波长和超晶格周期 ) ,得到了等效磁导率作为频率的函数关系并在偶极近似下数值计算了自旋波的色散关系 。
We investigate magnetostatic bulk and surface modes in a ferrimagnetic/nonmagnetic superlattice with the effective medium theory which is available in the range of λp(λ and p represent the wave length of spin wave and the period of the superlattice).The effective magnetic permeability as a function of frequency is obtained and dispersion relation of spin wave is computed numerically in the dipolar limit.Some typical dispersion curves of the surface and bulk modes are presented.
出处
《哈尔滨师范大学自然科学学报》
CAS
1999年第4期41-43,共3页
Natural Science Journal of Harbin Normal University
基金
黑龙江省自然科学基金项目
国家自然科学基金项目
关键词
亚铁磁超晶格
静磁模式
等效磁导率
Ferrimagnetic superlattice
Magnetostatic modes
Effective magnetic permeability
