Effect of MnCuFe2O4 content on magnetic and dielectric properties of poly (O-Phenylenediamine)/MnCuFe2O4 nanocomposites

Poly o-phenylenediamine (PoPD)/MnCuFe2O4 nanocomposites with three different ratios of MnCuFe2O4 (10%, 20%, 30% w/w) were synthesized by in-situ oxidative chemical polymerization method ammonium persulphate used as oxidant, while MnCuFe2O4 nanoparticles was prepared by auto-combustion method. The structure, morphology and magnetic properties of synthesized PoPD/MnCuFe2O4 nanocomposites were characterized by FT-IR, UV-visible absorption spectra, X-ray diffraction (XRD), Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), Thermogravimetric analysis (TGA) and Vibrating sample magnetometer (VSM). FTIR spectra and XRD were confirmed the formation of the PoPD/MnCuFe2O4 nanocomposites. The morphology of PoPD/MnCuFe2O4 nanocomposites is visualized through SEM and TEM. The spherical morphology of the PoPD was confirmed using SEM analysis. Dielectric properties of PoPD/MnCuFe2O4 nanocomposites at different temperatures have been performed in the frequency range of 50 Hz-5 MHz. The optical absorption experiments of PoPD/MnCuFe2O4 nanocomposites reveal that the direct transition with an energy band gap is around 2 eV. (C) 2015 Elsevier B.V. All rights reserved.