SYNTHESISE OF CoFe204-POLYANILINE NANOCOMPOSITE AND EVALUATION OF ITS MAGNETIC PROPERTIES

Particles of Cobalt ferrite, CoFe2O4, were coated with polyaniline (PANI) sulphate and phosphate during in-situ polymerization of aniline in an aqueous solution of sulfuric and phosphoric acid. The PANI- ferrite composites were characterized by Fourier transform infrared (FTIR) spectroscopy. Structures and morphology of products were studied by X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The crystallite size calculated by XRD was 16.65 nm. Magnetic measurement shows that CoFe2O4 and nanocomposite exhibit ferromagnetic behavior. The saturation magnetization, Ms, remanent magnetization Mr, and coersivity Hc for PANI sulphate/ CoFe2O4 nanocomposite were 40 emu/g, 20 emu/g and 301 Oe respectively. The same variables for PANI phosphate/Cofe2O4, nanocomposite were 12 emu/g, 28 emu/g and 333 Oe respectively.