Bismuth doped PbZr0.70Ti0.30O3 ceramics and their properties driven by high temperature local polarity

Abstract Lead zirconate-titanate PbZr 0.70 Ti 0.30 O 3 ceramics doped with bismuth oxide has been investigated. Dielectric and optical measurements were performed to check the dopant influence on phase transitions and pre-transitional effects. It has been postulated that the temperature at which maximum permittivity occurs is not connected with structural phase transitions.