Switching and energy-storage characteristics in PLZT 2/95/5 antiferroelectric ceramic system

Abstract

Switching mechanisms and energy-storage properties have been investigated in (Pb0.98La0.02)(Zr0.95 Ti0.05)0.995O3 antiferroelectric ceramics. The electric field dependence of polarization (P–E hysteresis loops) indicates that both the ferroelectric (FE) and antiferroelectric (AFE) phases coexist, being the AFE more stable above 100°C. It has been observed that the temperature has an important influence on the switching parameters. On the other hand, the energy-storage density, which has been calculated from the P–E hysteresis loops, shows values higher than 1 J/cm3 for temperatures above 100°C with around 73% of efficiency as average. These properties indicate that the studied ceramic system reveals as a promising AFE material for energy-storage devices application.