Dispersion Properties of Magnetostatic Surface Waves in a Ferrite Plate with Dissipation

Resumo

Dispersion of forward and backward (dissipative) magnetostatic surface waves is analyzed in the geometry of a plane-parallel in-plane magnetized ferrite plate with dissipation. The results of calculation of dispersion curves and characteristics of the group velocity as a function of the real and imaginary parts of the wave number are presented. A limitation on the dispersion curves and the group velocity with respect to the maximum value of the wave number has been revealed and interpreted on the basis of the aperiodic propagation mode. Practical recommendations for lowering of this limitation are given.