Effect of γ-irradiation on the dielectric loss and A.C. Conductivity of polyvinyl Alcohol Doped with CrCl3

Abstract

Dielectric loss and a.c. conductivity have been studied for γ-irradiated
polyvinyl alcohol doped with 30% by wt. CrCl3. The sample was subjected to
different doses of γ-rays (200, 400, 600, 800 Krad and 1 Mrad). Dielectric loss
measurements revealed that γ-irradiation increases the cross-linking density in
the sample. A.C. conductivity was explained in terms of the correlated barrier
hopping model.