Preparation and Characterization of Spinel NiCr2O4 by Co-precipitation Method

Abstract

Nickel chromite (NiCr₂O₄) was prepared by Co-precipitation method from an aqueous solution containing nickel (II) nitrate, chromium (III) nitrate followed by calcination at 650°C for 6h. The materials were characterized in detail by X-ray powder diffraction technology (XRD), FTIR spectroscopy and Differential temperature analysis DTA. Muller indexes (hkl) were calculated for the production, and it was clear that, the compound crystallized according to cubic lattice with following parameter a=8.3169A°, Z=8, V=575.3   . The space group of symmetry is Fd3m. The IR Spectroscopy Encourage our results during the bonding vibrations of Cr-O, Ni-O. The thermal characteristic shows four endothermic effects.

Keywords: Nickel chromite, Co-precipitation, Spinel.