Influence of bias electric field on elastic waves propagation in piezoelectric layered structures

• The BGO/fused silica and fused silica/LiNbO3 piezoelectric layered structures are investigated.
• The dispersion equations for Love waves propagating in the studied structure have been written.
• DC electric field influence tends to the transformation of BAW into SAW type mode.
• The electric field application to layered structure leads to the permission or prohibition of the wave propagation.

Theoretical and computer investigations of acoustic wave propagation in piezoelectric layered structures, subjected to the dc electric field influence have been fulfilled. Analysis of the dispersive parameters of elastic waves propagation in the BGO/fused silica and fused silica/LiNbO3 piezoelectric layered structures for a number of variants of dc electric field application has been executed. Transformation of bulk acoustic wave into SAW type mode under the dc electric field influence has been found. Possibility to control the permission or prohibition of the wave propagation by the dc electric field application and the appropriate choice of the layer and substrate materials has been discussed.