The analysis of the effect of homogeneous mechanical stress on the acoustic wave propagation in the La3Ga5SiO14/fused silica piezoelectric layered structure

The results of computer simulation taking into account the linear and nonlinear material constants have been presented. Study of the influence of external uniaxial mechanical stress on the dispersive characteristics of elastic waves in piezoelectric structures as La3Ga5SiO14/fused silica has been executed. The comparison of elastic wave velocity changes under the influence of an uniaxial stress while a full set of nonlinear material constants of crystalline layer + geometric nonlinearity, or only geometric nonlinearity of the layer induced by the static deformation of a substrate, has been fulfilled. (C) 2014 Elsevier B.V. All rights reserved.