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Abstract
The problem of the excitation of spin waves by oscillations of ferroelectric domain walls (in an alternating electric field) in ferroelectric/ferromagnets is considered. First the situation is studied where the equilibrium state of the magnetic subsystem is homogeneous. It is shown that due to the influence of the magnetic subsystem on the dynamics of ferroelectric domain walls in the ferroelectric subsystem the amplitude of the generated spin waves can be considerably enhanced at some definite frequency. The second situation considered is one where the excitation of spin waves takes place in ferroelectric/ ferromagnets containing both ferroelectric and ferromagnetic domain walls which form a bound state in which they oscillate relative to one another with frequency ω0. It is shown that the existence of a bound state leads to the fact that the frequency dependence of ferroelectric domain wall oscillations in an alternating electric field has resonance shape. If the frequency ω0 lies in the spin wave region the same will be true also for the frequency dependence of the spin wave amplitude.