Abstract

• Magnesium copper zinc ferrites with the general formula Mg0.5CuxZn0.5-xFe2O4(x=0, 0.1, 0.2, 0.3, 0.4, 0.5) were prepared by mixing stoichiometric proportions of magnesium, copper, zinc and ferrite nitrates with calculated amount of citric acid. Before mixing, four raw samples were checked by XRD to confirm these samples are pure or not. Four raw samples, magnesium nitrates: copper nitrate: zinc nitrates: ferric nitrates (Mg(NO3)2.6H2O, Cu(NO3)2.6H2O, Zn(NO3)2.6H2O, Fe(NO3)3.9H2O) were mixed with citric acid (C6H8O7) in different ratios in the beaker and stirring at 70°C until to get viscous gel. And then the samples were calcined at 800˚C for 2 hr. The structural analysis, crystallize size and surface morphology investigation of as prepared samples were studied by Powder X-ray Diffractometer (XRD) and Scanning Electron Microscopy (SEM) techniques. The temperature dependent resistivity of Mg-Cu-Zn ferrites were analysis in various concentration of copper.