Structural and Magnetic Properties of Cobalt Ferrite Nanopowders Synthesis Using Contact Non-Equilibrium Plasma

Different grades of magnetic cobalt ferrite (CoxFe3-xO4) nanoparticles were synthesized with various molar ratios of Fe 2+ to Co 2+ ions in the initial salt solutions method with using contact non-equilibrium plasma.The crystal structure and morphology of the nanoparticles are obtained from X-ray diffraction and transmission electron microscopy studies.With an increase in the value of x, the saturation magnetization for the samples of CoFe2O4 has decreased from 150.9 emu/g to 1.2 emu/g.The dependence of the coercive force on x is extremal with a plateau maximum corresponding to the x = 0.5-1.25.