Doping and Irradiation Dependence of Electrical Conductivity of Fe3+ and Ni2+ Doped Polyvinyl Alcohol Films
G. Vijaya Kumar and R. Chandramani
Department of Physics, Bangalore University, Bangalore-560 056, Karnataka, India
Received: December 05, 2008
Full Text PDF
PVA and doped PVA films were prepared by solution casting. The Change in electrical conductivity of pure PVA and transition elements FeCl3 and NiCl2·6H2O doped PVA films with and without γ-irradiation in the temperature range 50-130°C has been investigated using four point probe technique. The dc electrical conductivity increases with increase in dopant concentration, with temperature and γ-irradiation. The results revealed that γ-irradiation enhances the electrical conductivity. The variation of electrical conductivity σ with temperature, before and after irradiation is due to the intermolecular hydrogen bonding between Fe3+ with OH group of PVA and Ni2+ with OH group of PVA. We found that Fe3+ doped PVA films show higher conductivity than Ni2+ doped PVA films.
DOI: 10.12693/APhysPolA.117.917
PACS numbers: 68.55.Ln, 72.80.Le, 61.80.x