Temperature dependence of the mechanical and electrical properties of soft-doped lead zirconate titanate under compression and impact

Compared to a quasistatic environment,the electromechanical response of piezoelectric ceramics exhibits a considerably nonlinear behavior when subjected to impact.If the effect of ambient temperature is further considered,then the situation becomes more unpredictable.The thermal,mechanical,and electrical properties of soft-doped piezoelectric ceramics(PZT-5H)under compression and impact conditions were analyzed in the temperature range of-60℃to 200℃(below Curie temperature).The experimental results indicate that the fracture strength of PZT-5H has an extreme value near room temperature.The dynamic piezoelectric coefficient is strongly temperature dependent and has a maximum value near 100℃because of the“electric devil's staircase effect”between polarization and domain switching threshold.These temperature-dependent data will enable the accurate prediction of the dynamic performance of devices by computer simulation.