DEVELOPMENT OF HIGH PERFORMANCE FERROELECTRIC MATERIAL FOR CAPACITOR AND ACTUATOR APPLICATIONS

M. V. Takarkhede, S. A. Band

Abstract: A ternary system of composition 0.7PMN-0.2PT-0.1PZN and 0.7PMN-0.1PT-0.2PZN were investigated employing columbite route. A detailed and systematic study of phase, dielectric properties and microstructure were carried out and compared. Ceramics of composition 0.7PMN-0.1PT-0.2PZN demonstrated larger grain size and higher density than ceramics of composition 0.7PMN-0.2PT-0.1PZN. The composition 0.7PMN-0.1PT-0.2PZN exhibited enhanced dielectric properties in the sintering temperature 1100-1170oC while composition 0.7PMN-0.2PT-0.1PZN exhibited enhanced dielectric properties in the sintering temperature range 1170-1180oC. Dielectric properties seem to be dependent on density and intrinsic dielectric constant of PMN, PZN for single phase perovskite ceramic. The ceramic of composition 0.7PMN-0.1PT-0.2PZN proved to be the best composition showing enhanced dielectric properties at lower sintering temperature as compared to 0.7PMN-0.2PT-0.1PZN.

Keywords: Ferroelectric, Capacitor, Actuator.

DOI: https://doi.org/10.15623/ijret.2017.0601019