Substitutional effect on structural and magnetic properties of AxCo1-xFe2O4 (A = Zn, Mg and x=0.0, 0.5) ferrites

The influence of the Zn and Mg content on the structural and magnetic properties of cubic cobalt ferrites (CoFe2O4) synthesized by chemical co-precipitation method was investigated using X-ray powder diffraction (XRD), Raman spectroscopy and vibrating sample magnetometer (VSM). Rietveld - refined X-ray powder diffraction patterns at room temperature confirmed the formation of single-phase cubic (FCC) structure with Fd3m space group for all prepared samples. Slight variation in the lattice parameter of Mg doped CoFe2O4 has been observed. Raman analysis reveals the doublet like nature of A(1g) mode for all synthesized samples. Small shift in Raman modes and increment in the linewidth has been observed with the doping ions. The magnetic measurement explored that the saturation value (M-s) is maximum for CoFe2O4 as compared to Zn and Mg doped cobalt ferrites samples. (C) 2011 Elsevier B.V. All lights reserved.