Non-linear acoustomagnetic wave instability under resonance magnetoacoustic interaction

摘要

This articles deals about non-linear acoustomagnetic wave instability under resonance magnetoacoustic interaction. The nonlinear instability threshold of dipole magnetostatic waves has been investigated experimentally for MSW exciting in the range of magnetic fields and frequencies where exchange MSW are in phase synchronism with transversal acoustic waves. Nonlinear characteristics of the magnetostatic mode spectrum of planar ferrite resonators has been investigated. The nonlinearity threshold oscillations have been observed experimentally for dipole magnetostatic oscillations exciting in the range of frequencies and magnetic fields where resonant interaction of spin-wave modes with transversal acoustic modes takes place.