Abstract
► Zn and Mg doped CoFe 2 O 4 were successfully prepared by co-precipitation method. ► Cell parameter of Mg doped is slightly less than pristine and Zn doped one. ► Raman spectra reveal a doublet like feature for A 1g mode in all the samples. ► Red shift in Co 0.5 Zn 0.5 Fe 2 O 4 and blue shift in Co 0.5 Mg 0.5 Fe 2 O 4 has been observed. ► VSM concludes that saturation magnetization value ( M s ) is maximum for CoFe 2 O 4 . The influence of the Zn and Mg content on the structural and magnetic properties of cubic cobalt ferrites (CoFe 2 O 4 ) 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 Fd 3 m space group for all prepared samples. Slight variation in the lattice parameter of Mg doped CoFe 2 O 4 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 CoFe 2 O 4 as compared to Zn and Mg doped cobalt ferrites samples.
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