Effect of annealing atmosphere on the energy storage performance of antiferroelectric ceramics PLZT
摘要
Antiferroelectric materials, which exhibit high saturation polarization intensity with small residual polarization intensity, are considered as the most promising dielectric energy storage materials. The energy storage properties of ceramics are known to be highly dependent on the annealing atmosphere employed in their preparation. In this study, we investigated the effect of annealing atmosphere on the energy storage properties of lead zirconate titanate (PLZT) ceramics prepared by the sol-gel method. Specifically, the ceramics were annealed in four different atmospheres: nitrogen, oxygen, vacuum and air. Our results showed that the samples annealed in oxygen and air exhibited significantly higher energy storage density and lower dielectric loss compared to those annealed in nitrogen and vacuum. With the objective of modulating the internal defect structure of ceramics by changing the atmosphere during annealing, we annealed the ceramics in