MAGNETOELECTRIC GENERATION OF WAVES BY DOMAIN-WALLS IN A FERROELECTRIC-FERROMAGNET

Excitation of the spin waves in ferroelectric-ferromagnet by oscillati ons of ferroelectric domain wall as a whole in alternating electric fi eld was investigated in the frame of oscillatory model. It was shown t hat due to the fact that frequency of ferroelectric domain wall oscill ations as a whole lies in spin wave region the resonance excitation of spin waves is possible. That means that the amplitude of generated sp in waves has resonance type dependence on spin wave frequency. This pa per also deals with investigation of excitation of electric polarizati on in ferromagnet and in ferroelectric-ferromagnet by oscillations of magnetic domain wall as a whole in alternating magnetic field. It was shown that electric polarization excitations are localized on magnetic domain wall.