Ferroacoustic interaction in yttrium iron garnet with Rayleigh waves

Abstract

The absorption of Rayleigh waves propagating on the surface of a YIG single crystal is reported. As a function of an external magnetic field the absorption exhibits a peak which is not believed to be ferroacoustic resonance. The strength of the interaction is at least two orders of magnitude lower than that encountered by bulk shear waves when undergoing resonance. It is attributed to Rayleigh waves on a magnetic medium being ``leaky'' rather than resonant.