Electrical properties and phase transition behaviors of Sr-doped 0.8PZT–0.2PNN ceramics

Dielectric properties and phase transition behaviors of Sr-doped 0.8PbZr1/2Ti1/2O3–0.2PbNi1/3Nb2/3O3 ceramics have been investigated. The ceramics were prepared by a normal solid-state method. For undoped sample, very high relative permittivity >30,000 (at 1 kHz) was observed at the transition temperature of 278 °C. With increasing Sr concentration, the degree of diffuse phase transition was enhanced and a linear reduction in the transition temperature was produced.