Cu substituted Ni0.5-xCuxZn0.5Fe2O4 (x = 0, 0.05, 0.1, 0.15 and 0.2) samples is synthesized using the sol-gel auto-combustion process. They have a cubic spinel structure with crystallite size in range of 29.01–42.68 nm. The increment copper content increases DC conductivity. electrical resistivity decrease an increase temperature i.e. it has negative coefficient resistance similar to semiconduc...

Metal oxide photocatalyst is a promising wastewater treatment process due to its simplicity, high efficiency, and low cost, as well being environmentally friendly non-energy consuming. The perovskite structure material, SrTi1?xNbxO3 (STNO) with x = 0, 0.01, 0.03, 0.05, was successfully synthesized by the sol-gel auto-combustion method. Samples pure phase cubic were obtained. Rietveld refinement...

Ni and La substituted M-type Ca hexaferrite of composition CaNi1Fe11O19 CaLa1Fe11O19 were synthesized by sol-gel auto combustion method using metal nitrates as oxidants citric acid reducing agent. The prepared samples characterized X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), energy dispersive analysis (EDAX), vibrating sample magn...

high purity lead titanate nanopowders in tetragonal form have been successfully prepared bycitric acid gel method using lead nitrate and tetra-n-butyl titanate as pb and ti sourcesrespectively and citric acid as complexing reagent. the precursors were calcined at varioustemperatures ranging from 450 °c to 600 °c for 2 h. fourier transform infraredspectroscopy (ft-ir), x-ray diffraction (xrd) an...