Effect of sintering temperature on microstructure, dielectric and ferroelectric properties of BaTiO₃ ceramics

Abstract

BaTiO₃ ceramic powders are prepared by the solid phase reaction method. BaTiO₃ ceramic powders are sintered at different temperatures for 3 h. The tetragonal phase of BaTiO₃ powder is confirmed by XRD. It was found that as the sintering temperature increased, the grain size, density, and dielectric constant of BaTiO₃ ceramics increased. All the BaTiO₃ ceramic samples sintered at various temperatures for 3 h show the diffuse phase transition and the diffuseness parameter and curie-Weiss constant are also calculated. BaTiO₃ ceramic samples sintered at 1200 °C show well-grown grain boundaries. The ferroelectric nature of sintered BaTiO₃ ceramic samples studied using P-E hysteresis measurements.

Keywords:

• Barium titanate
• solid state reaction
• X-ray diffraction
• density
• dielectric constant
• ferroelectric properties