Surface electroelastic shear waves in a system of piezoactive layer and half-space

A piezoactive half-space with a piezoactive layer on its surface is considered. Materials of the layer and the half-space are piezoelectrics of class 6 mm with different properties. Shear stresses between the two piezoelectrics are taken to be zero. Interaction between shear waves in the layer and the half-space is due to continuity of electrical field on their surface. Existence condition of the surface waves is obtained. It is established, that two waves of Gulayev–Bleustain type can exist in considered system