Electroacoustic interaction in ferroelectric ceramics in a rotating electric field

A boundary-value problem was solved for transverse acoustic waves by using conductive ferroelectric ceramic with nonstationary anisotropy induced by a rotating electric field. The wave numbers, ellipticities, and amplitudes of the acoustic field eigenwaves were calculated with allowance for the interaction between the ultrasound and the conduction electrons. The reflected and transmitted wave intensities were studied as a function of the specimen thickness in the case of resonance interaction, where the ultrasound frequency was equal to the frequency of the rotating electric field. The conditions of specimen thicknesses providing the minimal and maximal values of the wave intensities were established. 8 refs., 2 figs