垂直不均匀磁场中静磁波的传播特性

Magnetostatic Wave Propagation Characteristics under Normal Nonuniform Bias Magnetic Field

本文理论分析了垂直不均匀磁场作用下磁性薄膜中静磁波的传播特性，具体计算了抛物线分布的不均匀磁场对静磁对表镣波振幅的影响．计算表明，在适当分布的不均匀场作用下，与均匀磁场情形相比，波导中传播的静磁波振幅有所增加。

This paper theoretically analyzes the propagation characteristics of magnetostatic waves (MSWs) in magnetic film under normal nonuniform bias field.The dynamic magnetization of MSWs under the nonuniform field of parabolic profile is calculated in detail.Calculation results indicate that,under nonuniform bias field of appropriate profile,MSW amplitude can be increased by comparison with the case of uniform bias magnetic field,thereby,the diffraction effect of guided optical waves from the MSWs is also enhanced.