EFFECT OF V 2 O 5 ADDITIVE ON ELECTRICAL AND DIELECTRICAL PROPERTIES OF NI-ZN FERRITE

Abstract: In this work, the electrical and dielectrical properties of Ni-Zn ferrite by addition of additive V2O5 powders were investigated. Ni0.7Zn0.3Fe2O4+ xV2O5 (where x = 0.0 and 0.2) powders were prepared by solid state reaction method. The DC electrical resistivity decreases with increase in temperature obeying Arrhenius relation. The variation of DC resistivity with temperature shows change in conduction behavior at Curie temperature. The activation energy in paramagnetic region is more than that of ferrimagnetic region. The room temperature resistivity of V5+ substituted Ni-Zn ferrites is higher than pure spinel ferrite. The resistivity decreases with V2O5 addition. The dielectric constant and dielectric loss tangent decreased with the increase of V5+ content. The obtained electrical and dielectric parameters are useful for high frequency application.

Keywords: Ni-Zn ferrite, V2O5 additive, electrical and dielectrical.