Structural characterization of Mg substituted on A/B sites in $$\hbox {NiFe}_2\hbox {O}_4$$ NiFe 2 O 4 nanoparticles using autocombustion method

Abstract

In the present paper, we are reporting the synthesis of pure nickel and magnesium ferrite [ \(\hbox {NiFe}_2\hbox {O}_4\) , \(\hbox {MgFe}_2\hbox {O}_4\) ] and magnesium-substituted nickel ferrite \((\hbox {Ni}_{1-x}\hbox {Mg}_{x/y}\hbox {Fe}_{2-y}\hbox {O}_4; x=y=0.60)\) on A/B sites with particles size in nanometer range using autocombustion technique. In this study, it has been observed that with increase in sintering temperature, the estimated bulk density of the materials increases. The XRD patterns of the samples show the formation of single-phase materials and the lattice parameters are estimated from XRD patterns. From Raman spectra, the Raman shift of pure \(\hbox {NiFe}_2\hbox {O}_4\) and \(\hbox {MgFe}_2\hbox {O}_4\) are comparable with the experimental values reported in literature. The Raman spectra give five Raman active modes \((A_ + E_{g} + 3F_{2g})\) which are expected in the spinel structure.

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