TO SYNTHESIZE MULTIFERROICS BIFEO3 NANOPARTICLES BY SOL GEL METHOD

Present study deals with optical properties of BiFeO 3 nanoparticles synthesized by sol gel technique. Prepared BiFeO 3 nanoparticles have been characterized to study structural, optical properties by XRD, FESEM and FTIR spectroscopy. BiFeO 3 is the most interesting material which exhibits multiferroics response. BiFeO 3 reveals simultaneously spontaneous properties of ferroelectric and ferromagnetic in the single phase sample at room temperature. The multifuctionality of BiFeO 3 proposes analyzing the fundamental physics as well as in many ranges of applications like in information storage, spintronics and sensors. BiFeO 3 nanoparticles are synthesized by following sol gel method. Field emission electron microscopy (FESEM) images show the surface morphology of the sample and also are used to calculate the average particle size. All types of functional groups of the sample BiFeO 3 as well as optical band gap are observed by the Fourier transform infrared spectroscopy (FTIR) spectra. The optical band gap of bismuth ferrite about (~2.2 eV) lies in visible range so it is applicable as photo catalyst for water splitting and degradation of organic pollutants materials. Keywords: band gap, ferroelectricity, ferromagnetism, photo catalyst.