Abstract
Sm-substituted spinel nano ferrites of Mg were synthesized through the Citrate Gel Auto Combustion method. The details of fluorescence, photocatalytic activity, and dielectric studies were investigated. Fluorescence spectra reveal that the emission wave length is at 250 to 380 nm in the region under the excitation wavelength of 220 nm. Photocatalytic activity was carried out by methylene blue and acid red under UV–visible irradiation, and degradation rate obtained every 10 min for 50 min. Dielectric parameters like the dielectric constant, loss, AC-conductivity, and impedance analysis have been studied with variations in frequency and temperature. The sample dielectric constant was decreased upon increasing frequency, whereas AC-conductivity increased. This behaviour is explained by the Maxwell-Wagner polarization theory. Single semicircle behaviour was observed in the impedance spectra.
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