Effect of Two-Stage Sintering on Dielectric and Ferroelectric Properties of Ba_0.80Pb_0.20TiO₃ Ceramics

Abstract

The different sintering techniques have been found to have remarkable effect on the microstructure and electrical properties of ceramics. The two-stage sintering technique has a potential for fabricating highly dense ceramics at low cost. The effect of two-stage sintering on the dielectric and ferroelectric properties of Ba_0.80Pb_0.20TiO₃ ceramics prepared by solid state route were investigated in this study. It has been found that, under suitable two-stage sintering conditions, the dense Ba_0.80Pb_0.20TiO₃ ceramics can be successfully achieved with improved electrical properties. The tetragonality is also found to increase in the samples sintered by the two stage sintering.

Keywords:

• Barium Titanate
• sintering
• dielectric properties
• ferroelectric properties
• microstructure

ACKNOWLEDGMENTS

The work was supported by DRDO under its grant-in-aid scheme. One of the authors, Parveen Kumar is thankful to DRDO for financial support in form of Senior Research Fellow.

Communicated by Prof. Amar Bhalla