Synthesis and the physical properties of MnZn ferrite and NiMnZn ferrite-polyaniline nanocomposite particles

We present a novel approach to synthesize MnZnferrite (MZF)-NiMnZnferrite(NiMZF)-Polyaniline (PANI) particles, where MnZnferrite is the magnetic core, and PANI is the conducting layer. The commercial ferrite and Ni-ferrite particles are primarily used, and the PANI-ferrite particles with a hybrid structure are synthesized via an oxidative electrochemical polymerization of aniline in an aqueous solution, which contains well-dispersed ferrite particles. The influence of ferrite content with respect to the electrical and ferromagnetic properties of the composite has been investigated by Electrochemical Impedance Spectroscopy (EIS) and DC field-cooled, zero-field cooled susceptibilities and M-H loop measurements. The origin of their electrical and ferromagnetic properties is also discussed based on structural characterizations including Fourier Transform Infrared (FT-IR) spectroscopy and X-Ray Diffraction (XRD).