Abstract

• Bismuth ferrite (BiFeO3)and cobalt doped BiFeO3(BiFe1-xCoxO3) materials was prepared by combustion method. The X-ray diffraction (XRD) method confirmed crystalline phase and crystalline size of these materials. The average crystallite size was obtained 30.26 nm. The shifting of peaks to higher angles was observed in cobalt doped BiFeO3. The formation of bonding structure was also identified by Fourier Transform infrared Spectroscopy (FTIR), it confirms the existence of Fe-O and Bi-O bands. The energy band gap was also evaluated from the measurement of UV spectrophotometer. It was observed that the increase in optical band gap with increasing in cobalt doping concentration in the BiFeO3 structure.