Magnetostatic surface waves in a ferrite/dielectric/metal structure magnetized by a linearly increasing transverse field

Abstract

Propagation of magnetostatic surface waves (MSSWs) in a ferrite/dielectric/metal structure magnetized by a nonuniform field whose intensity linearly increases with the coordinate normal to the direction of the magnetic field is considered. Wave trajectories are calculated. The variation of the wave number, as well as the variations of the directions of the phase- and group-velocity vectors, is investigated. Possible transformations of some waves into other modes and conditions for MSSW radiation are formulated. The parameters of ferrite/dielectric/metal structures that can be used in backward-wave devices are determined.