Structural and Electrical Characterization of Ni-Zn Ferrites

The effect of Zn substitution on the DC electrical resistivity, AC electrical conductivity and microstructure of V2O5 doped Zn(1-x)NixFe2O4 with x=0.0, 0.1, 0.2, 0.3, 0.4 (5 samples) were prepared by conventional ceramic technique has been investigated. The structural characterization of nickel-zinc ferrites were done by X-ray diffraction technique. Micro-structural and morphological studies were carried out by scanning electron microscope technique. The lattice constant determined from XRD data is in the reported range (8.4086 A.U.) DC electrical resistivity exhibits excellent semiconducting behavior. The result shows that AC conductivity increase with the increases in frequency. The micrographs of the samples shows that the average grain size increases with the decreases of Zn content while the grain size decrease with decreasing of Ni content. The variation of DC electrical resistivity with temperature is explained in this work.