Comparative study of frequency-dependent dielectric properties of ferrites MFe2O4 (M = Co, Mg, Cr and Mn) nanoparticles

Ferrites ‘MFe 2 O 4 (M = Co, Mg, Cr and Mn)’ nanoparticles were successfully synthesized by chemical co-precipitation method. X-ray diffraction technique was used to determine the crystal structure, phase purity and average crystallite size of these ferrites nanoparticles. X-ray density and porosity were calculated by using standard relations. Sauter’s relation was also used to estimate the specific surface area of these nanoparticles. The important characteristics like morphology, size and shape of these nanoparticles were examined and estimated by scanning electron microscopy technique. The energy-dispersive X-ray spectroscopy was used to determine the elemental compositional of these ferrites nanoparticles. The vibrational modes and bond coordination among the various atoms of these ferrites nanoparticles were investigated by Fourier transform infrared spectroscopy. The frequency-dependent dielectric and impedance measurements were taken by LCR meter. The comparative analysis of dielectric parameters of these ferrites nanoparticles can help the audience to select the material having desired dielectric properties for energy storage practical applications especially lithium-ion batteries.