Complex impedance response of Al/V2O5-P2O5/Al structures

Glass samples of composition 30 mol % of P2O5 and 70 mol% V2O5 were used in this study. They were prepared by the usual melt-quench method. The electrical conductance and capacitance were measured over the frequency range 1 Hz to 1 MHz. Measurements were performed in the temperature range between 303 and 403 K. The dielectric and complex impedance response of the measured structure is discussed. The equivalent circuit was proposed and its parameters calculated. A good agreement between proposed double-layer physical model and parameters of equivalent electrical circuit was obtained.