Synthesis and Magnetic Studies of Co-Ni-Zn Ferrite Nano Crystals

This paper reports the investigation on synthesis and magnetic characterization of Ni substituted Co(0.8)Zn(0.2)Fe(2)O(4) nano-particles. The nano-particles of Co(0.8-x)Ni(x)Zn(0.2)Fe(2)O(4) (x = 0.15, 0.20, 0.35, 0.50, 0.65) were prepared by co-precipitation method. The X-ray diffraction analysis confirmed the formation of single-phase face centered cubic (fee) spinal structure. The lattice parameter decreased as Ni concentration increased from x = 0 (a = 8.388 angstrom) to x = 0.65 (a = 8.3612 angstrom). The morphology of the particles examined through high-resolution TEM showed a well-isolated and less agglomerated homogeneous distribution of nano-particles which suggests that co-precipitation method is beneficial for magnetic nano-materials synthesis and their characterization. The influence of Ni on magnetic behavior (saturation magnetization and 4 pi M(s)) of Co(0.8-x)Ni(x)Zn(0.2)Fe(2)O(4) nano-materials have been evaluated and discussed.