2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/83454Theory of the acoustic analog of the polar Kerr effect is developed for an inclined incidence of the p-type wave on the interface between isotropic non-magnetic medium and ferromagnetic cubic crystal. Magnetic field dependences of ellipticity and rotation of the polarization plane of the reflected wave under magnon-phonon resonance are analysed in a weak-coupling approximation for interaction of magnetic and elastic subsystems.11 paages (one *.tex file and seven *.eps files)Classical PhysicsGeneral Physicstext