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

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... ric 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.