Synthesis and thermal stability of perovskite PbZr0.52Ti0.48O3 (PZT) powders via precipitation routes

摘要

Synthesis of PbZr0.52Ti0.48O3 (PZT) powders was realized via coprecipitation route or two-stage precipitation route. The thermal behavior and phase evolution of the PZT precursor were investigated with DTA/TG and followed with XRD, respectively. The thermal stabilities of the synthesized PZT powders were evaluated with TG. It concluded that the PZT powder prepared via two-stage precipitation route is of pure perovskite phase and of good thermal stability because the combination of Zr4+ and Ti4+ ions is enhanced and Pb(OH)2 is encapsulated by (Zr0.52Ti0.48)O(OH)2. However, the PZT powder obtained via coprecipitation route is of poor thermal stability due to the formation and evaporation of PbO.