Synthesis and Characterizations of CCTO Ceramics
by Solid State Reaction Route

Abstract

CCTO ceramics were synthesized by solid state reaction route. Calcination temperature was optimized. The sample was calcined for 10000C for 4, 8 and 12hours. Single perovskite phase was confirmed from XRD analysis for the samples calcined for 12hours. CCTO ceramics were conventionally sintered at 1050ºC for 4, 6, and 8hrs, respectively. Density measurements, XRD analysis, dielectric constant and dielectric loss measurements, SEM and P-E hysteresis loop studies were done. Highest density was achieved in sample conventionally sintered for 6 hrs. Dielectric measurements were done in the frequency range 1 kHz to 1 MHz. Electrical properties such as dielectric constant and dielectric loss were studied as a function of temperature and frequency, which showed a diffused phase transition.