Preparation and characterization of lead free k0 5na0 5 nbo3 ferroelectric bulk and thin films

Abstract

This thesis reports the successful synthesis of pure and rare earth oxides Dy2O3 and Gd2O3 contained KNN ceramics using conventional solid state reaction method The effect of calcination and sintering temperatures on structural microstructural dielectric and ferroelectric properties has been investigated The KNN ceramics were calcined at 700 oC and sintered at 1050 oC exhibited the orthorhombic structure with good dielectric properties 206 181 r 577 tan 206 180 0 05 at 1MHz and ferroelectric pr