CuMn2O4 nanostructures: Facial synthesis, structural,magnetical, electrical characterization and activation energy calculation

The work is the report about stearic acid sol-gel synthesis method, magnetically, electricalcharacterization and activation energy of copper manganese oxide nanostructures. The CuMn2O4 nanostructures are synthesized at a temperature of 600°C using the sol-gel method. The structural analysis using X-ray diffraction (XRD) and Scherrer equation show that the crystallite size of CuMn2O4 is about 23.0 nm. The activation energy value is measured by temperature-programmed reduction (TPR) analysis at three heating rates of 10, 15 and 20 °C/min and Kissinger equation .The Ea value is 28.1 kJ/mol. Vibrating sample magnetometer (VSM) analysis of the nanostructures indicates moderateferromagnetic properties. Examination of the dielectric properties by the LCR meter indicates the semiconducting property of the nanostructure. The highest conductivity increase was in the frequency of 308 MHz equal to 70.7 μS. Therefore, the CuMn2O4 nanostructures are potential candidates in fuel cells, telephones, loudspeakers and transformers due to their properties and convenience, non-toxic and environmentally friendly production methods.