Electrostrictive Properties of the lead Zirconate Titanate Solid‐Solution System

Abstract

Values of the electrostrictive constants for the lead zirconate titanate (PZT) solid‐solution system were required to com plete the development of a thermodynamic phenomenological theory of PZT. The electrostrictive Q̄ 12 constant was meas ured as a function of composition on polycrystalline ceramic PZT samples. These data were used with additional single–crystal and ceramic data from the literature to approximate the compositional dependence of the electrostrictive constants of the PZT system. Series and parallel equations, analogous to the Voigt and Reuss models for the elastic constants, were used to relate the ceramic and single‐crystal data, and to pre dict the upper and lower bounds of the ceramic electrostric tive constants from the single‐crystal constants.