Abstract
The Co1-xZnxFe2O4 (0.2 ≤ x ≤ 0.8) spinel ferrite nanoparticles (CoZnF NPs) were successfully prepared by sol-gel auto-combustion method using citric acid as a complexent performing important role to drive the chemical reaction. The pH of the solution was kept to 7 with an addition of ammonia solution (NH4OH) solution in order to maintain the stability in the solution. Single phase; cubic spinel structure of CoZnF NPs; space group Fd3m-1 was confirmed through obtained XRD pattern. A mean crystallite size (t), lattice parameter (ɑ) and other structural and morphological parameters before and after gamma irradiation were studied to show the effect of Co60 γ-irradiation with a total gamma dose of 5 Mrad on the physico-chemical properties of the material. The topography of the CoZnF NPs was analysed using the AFM images. The Raman spectroscopic analysis have shown the particular active modes Eg, 3T2g, and A1g. The UV–Vis spectroscopic absorption of CoZnF NPs was reported at ∼ 254.09 to ∼ 258.73 Å and the optical bandgap was found with the help of Tauc’s plot; Kubelka-Munk function F(R); that was reported to be 3.51–3.96 eV.
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