An Investigation On Structural And Optical Properties Of Ceo2 And Cr Doped Ceo2 Nanostructures

Abstract

Cerium Oxide Nanoparticles are of special interest in research activity because of their astonishing properties in electronic devices due to their ferromagnetic nature, transparency to visible light, application in catalyst, solar cells, solid oxide fuel cell applications. At present, there is a study reporting ferromagnetism observed in Cr doped CeO2 nanoparticles. Thus, doping of Cr may be helpful in interpreting RTFM in doped CeO2. In this, synthesis of nanostructures of CeO2 and Cr doped CeO2 are done using modified auto combustion method using Cerium nitrate hexahydrate and citric acid. The sintered samples are taken for different characterizations including XRD Diffraction and UV-Visible Spectroscopy. By the XRD analysis ,the phase structure of pure and Cr doped CeO2 ,over the 2θ range 20-80° are examined eight peaks were observed and all the eight peaks were in perfect agreement with JCDPS data 34-0394 and well indexed to fluorite cubic structure of CeO2.The fluorite structure of Cerium Oxide is maintained upon Cr doping can also be suggested by the absence of diffraction peaks corresponding to the Cr related impurity phase observed in the samples .The linear optical characteristics were investigated by the UV Visible DRS Spectra for the spectral limit 200-800 nm. As a result, the structural and optical properties of the prepared nanostructures are well studied.