Studies on the piezoelectric and magnetostrictive phase distribution in lead zirconate titanate-cobalt iron oxide composites

► Cobalt iron oxide homogeneously dispersed in lead zirconate titanate matrix. ► Transition metal cation/(s) diffusion in lead zirconate titanate grains. ► Dopant induced structural phase transition of lead zirconate titanate. ► Defect induced thermally activated dielectric relaxation in these composites.