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

Document Type : Research Paper

Abstract

The work is the report about stearic acid sol-gel synthesis method, magnetically, electrical
characterization 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 moderate
ferromagnetic 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.

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