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 |