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A poled lead titanate zirconate rectangular parallelepiped is subjected to compressive stress-induced switching at room and high temperatures. From measured electric displacement and strains, piezoelectric and elastic compliance coefficients are estimated and plotted versus remnant state variables. Then a set of modeling equations is proposed to predict the high temperature behavior of the material reported in one of the authors’ previous work.9) The equations are applied to the present work to calculate the evolutions of reference remnant state variables during mechanical depolarization. Finally, the high temperature behavior of the material during mechanical depolarization is compared with the behavior during electric field-induced polarization reversal in terms of reference remnant state variables.

Compressive stress-induced depolarization in ferroelectric ceramics at room and high temperatures: experiment and prediction