Solutions of the equations for piezoelectromagnetism in polarized ceramics: Infinite medium and slab

Abstract

A method is proposed to calculate both acoustic and electromagnetic modes in piezoelectric hexagonal ceramics. In the infinite system, the five characteristic modes (three acoustic and two electromagnetic) are divided into two classes: the first one includes two modes (one acoustic and one electromagnetic) that are slightly interacting through the piezoelectric coupling; the second class comprises three modes (two acoustic and one electromagnetic) that show relevant effects due to piezoelectricity in their dispersion relations. Finally, acoustic and electromagnetic modes are analyzed in a slab surrounded by vacuum taking fully into account the effects of piezoelectric coupling. © 2008 American Institute of Physics.