Synthesis, characterization, magnetic and morphological properties of poly(m-phenylenediamine)/ZnCoFe₂O₄ nanocomposites

In this work, poly(m-phenylenediamine) (PmPD)/ZnCoFe₂O₄ nanocomposites (NCs) were synthesised by in-situ chemical oxidative polymerisation method. The ZnCoFe₂O₄ nanoparticles (NPs) were prepared by auto-combustion method. The crystalline size of PmPD/ZnCoFe₂O₄ NCs and ZnCoFe₂O₄ NPs were calculated using the Powder X-ray diffraction (XRD) analysis. The functional group of the samples was analysed by Fourier transform infrared spectral (FTIR) analysis. The XRD and FTIR results were clearly indicated that the formation of PmPD/ZnCoFe₂O₄ NCs. The spherical morphology of the PmPD/ZnCoFe₂O₄ NCs was confirmed through Field emission electron microscopy (FESEM). The magnetic hysteresis (M-H) loops of ZnCoFe₂O₄ NPs and PmPD/ZnCoFe₂O₄ NCs were revealed their ferromagnetic behaviour. Thermogravimetric analysis (TGA) was indicated that thermal stability of PmPD/ZnCoFe₂O₄ NCs increases with increase in concentration of ZnCoFe₂O₄ NPs. The dielectric properties of PmPD/ZnCoFe₂O₄ NCs were also examined with different frequency.