Studies of Structural, Microstructural and Electrical properties of Barium Titanate Modified Lead Iron Niobate

Abstract

One series of Barium Titanate (BaTiO3) modified Lead Iron Niobate (Pb(Fe0.5Nb0.5)O3) ceramic oxides having chemical formula (1-x) Pb(Fe0.5Nb0.5)O3 - x BaTiO3 (x = 0.00, 0.025, 0.05, 0.075, 0.1) were prepared by solid state reaction route. The formations of the compounds were confirmed by X-ray diffraction analysis. Rietveld refinement result of X-ray diffraction spectra confirm that all the compositions crystallize in monoclinic crystal structure with Cm space group. FESEM micrographs show a decrease in average grain size on increasing composition. Dielectric properties of the materials were studied in a wide frequency range at different temperatures. The temperature dependent dielectric study showed the ferroelectric to paraelectric phase transition around 110 °C for Pb(Fe0.5Nb0.5)O3 and decreases on increasing composition.