  We report on the self-consisted semi-analytical theory of magnetoelastic
excitation and electrical detection of spin waves and spin currents in
hypersonic bulk acoustic waves resonator with ZnO-GGG-YIG/Pt layered structure.
Electrical detection of acoustically driven spin waves occurs due to spin
pumping from YIG to Pt and inverse spin Hall (ISHE) effect in Pt as well as due
to electrical response of ZnO piezotransducer. The frequency-field dependences
of the resonator frequencies and ISHE voltage $U_{ISHE}$ are correlated with
experimental ones observed previously. Their fitting allows to determine some
magnetic and magnetoelastic parameters of YIG. The analysis of the YIG film
thickness influence on $U_{ISHE}$ gives the possibility to find the optimal
thickness for maximal $U_{ISHE}$ value.
