Electrical conductivity and dielectric properties of bulk glass V 2O5 (ZnO, PbO) SrO FeO

Abstract

The AC conductivity and dielectric parameters of the glassy system of (70-x) V2O5x(Zn/Pb)10SrO20FeO (x = 0, 5, 10, and 15) glasses have been investigated. The frequency and temperature dependence of dielectric constant (ε') and dielectric loss (ε'') is studied in the frequency range 100Hz-5MHz and in the temperature range 300-460K. Dielectric dispersion is observed in all samples as Zn/Pb increase content in the (70-x)V2O5x(Zn/Pb)10SrO20FeO systems. These results are explained on the basis of a Debye-type relaxation. It is also observed that the activation energy increases on increasing the Zn/Pb contents in this system. © 2011 M. S. Aziz et al.