Ferroelectric properties and internal friction in doped PZT ceramics

摘要

Multicomponent PZT-type solid solution with composition: Pb_(0.975)Ba_(0.01)Ca_(0.01)Sr_(0.005) (Zr_(0.52)Ti_(0.48))O_3+1.4wt.%Bi_2O_3+0.3wt.%GeO obtained by hot uniaxial pressing method is described in this paper. There are presented the results of studies of structural, dielectric and internal friction of obtained multicomponent PZT-type ceramics. It has been stated that the dielectric anomalies and internal friction anomalies are observed in similar temperature ranges. Obtained PZT-type ceramics have high value of the dielectric permittivity and low dielectric losses. The high temperature of phase transition and high value of electric permittivity allow considering this material as a base for low frequency and high temperature electromechanical transducers.