The Synthesis and Characterization of Nickel and Cobalt Ferrite Nanopowders

The studied nanopowders of ferrites are obtained by the chemical sol-gel self-combustion method and by the high frequency plasma chemical synthesis. In sol-gel method the disperse Co and Ni ferrites are obtained from the appropriate metal nitrate salt solutions of stoichiometric ratio. Glycine (Gly) is used as the self-combustion agent with molar ratio Me/Gly = 1:0,8 and Gly/Nitr. = 1:4. The high frequency plasma synthesis of the nanosized materials is based on vaporization of metal oxides in the plasma and very fast cooling of the vapor, resulting in nanosized ferrite particles