Abstract: In this work, the electrical and dielectrical properties of Ni-Zn ferrite by addition of additive V₂O₅ powders were investigated. Ni_0.7Zn_0.3Fe₂O₄+ 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.