Abstract

This investigation highlights the influence of isovalent Sr and acceptor Mn modified PLZT near morphotrophic phase boundary for phase formation, microstructure, density, dielectric and piezoelectric properties. [Pb 0.9896-yLa0.0104Sry][Zr0.529Ti 0.471]0.9949 Mn0.005O3 (PLSZMT) where y = 0, 0.2, 0.4, 0.6, 0.8 and 1 mol.%, polycrystalline solid solutions were synthesized by solid state reaction method. X-ray diffraction patterns indicated that undoped composition had shown coexistence of both rhombohedral and tetragonal phases while increasing Sr content resulted in phase shift to tetragonal phase. Grain size and apparent density enhanced with the increasing Sr content up to y = 1 mol.%. The optimum eRT, d33 and kp were observed at y = 1 mol.%, respectively which could be suitable for piezoelectric applications.