Hysteresis behaviour in lead zirconate titanate/polyvinylidene flouride composites

Abstract
Hysteresis phenomena in PZT/PVDF composites for different weight fractions of PZT and PVDF have been measured using a sinusoidal electric field up to 100 kV/cm at 50Hz in the temperature range -20°C to 130°C. Psat and Pr are observed to be increasing with the PZT content in the composite samples. The analysis of the SEM micrographs and the IR spectra suggest that this is because of the structural modification of the composites. The sharp drop in Pr for sample D (90:10) at 80°C is attributed to the depolarization of PVDF.