Indian Journal of Pure and Applied Physics

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Polycrystalline Mn-Co-Ni ferrite was synthesized by solid state reaction method at 950 °C. X-ray diffraction pattern indicates that specimen has a cubic spinel type structure with lattice constant varies from 8.321 Å to 8.329 Å, X-ray density was calculated 5.39 g/cm3 to 5.36 g/cm3 and approximate particle size was found 36 nm. Magnetic measurements was carried out using VSM at room temperature (RT) where saturation magnetization (Ms) was found 55 emu/g to 42.19 emu/g, coercive field (Hc) was found 165 Oe to 88 Oe and magnetic moment (μB) was found from 2.30 μB to 1.75 μB. UV-visible measurement was recorded the maximum absorption was found at wavelength 213 nm to 222 nm and direct optical band gap found 3.32 eV to 3.96 eV.

Keywords

Ferrites, Magnetic, XRD, UV-Vis.
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