Abstract:
In this study, CuFe2O4 and gives Cu0.9Zn0.06Mg0.04Fe2O4
nanoparticles were ssucessfuly
synthesized by sol-gel combustion method using citric acid as a chelating agent. The
Comparative study of thermal, structural, optical, electrical and dielectric properties were
investigated using thermogravimetric analysis (TGA), differential thermal analysis
(DTA), x-ray Powder diffraction (XRD), Fourier transform infrared (FT-IR),
Spectroscopy UV-Vis spectroscopy and impendences spectroscopy (IS) characterization
techniques. From the TGA/DTA study, the weight loss regions and the stable phase
formation of both compounds were identified. The XRD analysis revealed that both the
synthesized samples were cubic spinel structure with Fd-3m space groups. From XRD
results, different structural parameters such as lattice parameter, unit cell volume and
crystal size of CuFe2O4 and Cu0.9Zn0.06Mg0.04Fe2O4 ferrites were calculated. The FT-IR
spectroscopy study showed that both ferrite samples exhibitd two strong absorbation
bands, which are responsible for the formation of the synthesized materials. The optical
energy gap values for CuFe2O4 and Cu0.9Zn0.06Mg0.04Fe2O4 were found to be 2.75eV and
2.7eV, respectively. Nyquist plots were done to investigate the effect of grain and grain
boundary on the electrical properties of the synthesized compounds. The variation of
dielectric property with frequency showed the dispersion behavior which is explained in
the light of Maxwell–Wagner type of interfacial polarization.
