Asian Journal of Research in Chemistry

Zinc substituted Magnesium ferrichromate Mg_1-xZn_xFeCrO₄ (x = 0.0 to x = 0.9)) system was synthesized by co-precipitation method. The structural, spectral and morphological properties of ferrites were determined by X-ray diffraction (powder XRD), IR and Scanning Electron Microscopy (SEM). Crystal lattices parameters increases with the increase in the zinc substitution in the system. Two absorption bands in the FTIR, in the range of 400 cm⁻¹ to 4000 cm⁻¹ were observed due to tetrahedral (A) and octahedral (B) stretching vibration. Force constant for tetrahedral site (K_t) and octahedral site (K_o) were calculated from IR. SEM data suggests surface morphology to be nearly spherical and agglomerates. Cation distribution in ferrites was studied using Bertaut method. Prepared samples shows cubic spinel structure, these observations were supported by Rietveld refinement.