title: Shear-horizontal surface waves on piezoelectric ceramics with depolarized surface layer.
abstract: Theoretical analysis and numerical results describing the propagation of SH (shear-horizontal) surface waves on piezoelectric ceramics with a depolarized surface layer are described. SH surface waves propagating in piezoelectric ceramics with a depolarized surface layer are shown to be a mixture of the Bleustein-Gulyaev surface wave, electrical potential, and the Love surface-wave mechanical displacement. Depolarization of the surface layer in piezoelectric ceramics produces strong dispersion and a multimode structure of the SH surface wave. The penetration depth of the SH surface waves propagating on an electrically free surface of a piezoelectric ceramic with a depolarized surface layer can be significantly smaller than that of the Bleustein-Gulyaev surface waves propagating on a free piezoelectric half-space. It is concluded that piezoelectric ceramics with a depolarized surface layer can be used in hybrid piezoelectric semiconductor convolvers of reduced size.
authors.affiliation: Inst. of Fundamental Technol. Res., Polish Acad. of Sci., Warsaw, Poland.
authors.forename: P J
authors.initials: PJ
authors.lastname: Kielczynski
authors.forename: W
authors.initials: W
authors.lastname: Pajewski
authors.forename: M
authors.initials: M
authors.lastname: Szalewski