Microstructure, Ferroelectric And Electrocaloric Effect Of (Pb0.88la0.08)(Zr0.65ti0.35)O-3 Ceramics Doped With Zno

In this study, in order to develop relaxor ferroelectric ceramics with large electrocaloric effect, (Pb0.88La0.08)(Zr0.65Ti0.35)O-3 ceramics were manufactured using conventional solid-state reaction method with the amount of ZnO addition. The XRD pattern of all specimens indicated general perovskite structure with secondary phase. With increasing the amount of ZnO addition, the coexistence of rhombohedral and tetragonal phases was observed. The temperature change T of specimen exhibited the tendency to increase with the amount of ZnO addition. Furthermore, at the 0.6wt% added ZnO ceramics, the optimal value of T = 0.345 degrees C in ambient temperature of 215 degrees C was appeared. It is considered that (Pb0.88La0.08)(Zr0.65Ti0.35)O-3 ceramics show the possibility of refrigeration device application.