Physicochemical characteristic of BaTi0.95Zr0.05O3

Abstract

Physical and chemical properties of BaTiO 3 (BT) and BaTi 0.95 Zr 0.05 O 3 (BZT0.05) ceramics have been studied. These powders are prepared by the Sol-gel process and calcined at different temperatures [500°C-1000°C]. X-Ray Diffraction (XRD) showed a crystallization of BT and BZT0.05 powders in the perovskite phase after a calcination temperature at 600°C, during 4 hours, but in the presence of some traces of zirconium oxide for the doped powder. Also, the effect of zirconium addition on dielectric properties to BT is analyzed. Indeed, dielectric measurements carried out have shown the presence of a second anomaly for Zr doped material at 60°C; an anomaly that has been attributed to structural transition.