Dielectric properties of Polly vinyl alcohol (PVA)‎ doped with alizarin orange dye thin films prepared by cast method using lumped equivalent circuit

Abstract EN

In this study the dielectric properties of poly vinyl alcohol ( PVA) doped with Alizarin Orange Dye thin films prepared by cast method were deposited on aluminum substrate at room temperature by using cast method technique by using Lumped equivalent circuit.

The dielectric properties were studied in the frequency and temperature ranges (1-100)KHz and (303-343) K respectively.

These properties include dissipation factor, series and parallel resistance, series and parallel capacitance, real and imaginary part of the dielectric constant, a.c conductivity and impedance (real and imaginary ) part, that have been deduced from equivalent circuit.

The investigation shows that the dielectric constant of polymer under study increases with increasing temperature while it is decreasing with increasing the frequency .The dissipation factor is increasing as the frequency increased.