ENHANCEMENT OF ELECTRICAL CONDUCTIVITY IN POLYVINYL ALCOHOL FILMS BY DOPING WITH Nd3+IONS

Vijaya Kumar

doi:10.29121/granthaalayah.v5.i4RAST.2017.3308

Authors

Vijaya Kumar G Department of Physics, Maharani’s Science College for women, Palace Road, Bangalore-560001, India

DOI:

https://doi.org/10.29121/granthaalayah.v5.i4RAST.2017.3308

Keywords:

Polyvinyl Alcohol, Nd3 Ions, DC Electrical Conductivity

Abstract [English]

The electrical properties of polyvinyl alcohol (PVA) films have been improved pronouncedly by doping with Neodymium (III) nitrate hexahydrate. Pure PVA and PVA: Nd³⁺ films have been prepared by solution casting method. Both type of films were characterized by X-ray diffraction technique for structural studies. XRD pattern shows the appreciable shift of 2Ө towards higher value with increase in Nd³⁺concentration. This signifies the presence Nd³⁺ dopant in polymer matrix. Further direct current electrical conductivity (σ) of Nd³⁺ doped PVA films in the temperature range 50⁰C-160⁰C has been studied using four probe techniques. For a given concentration σ increases with increase in temperature and with dopant concentration. At 120⁰C, conductivity of PVA: Nd³⁺(10 mol %) film is 7.116 μΩ^-1cm^-1, PVA: Nd³⁺(15 mol %) film is 11.176 μΩ^-1cm^-1, PVA: Nd³⁺(20 mol %) film is 17.418 μΩ^-1cm^-1 and PVA: Nd³⁺ (25 mol %) film is 23.740 μΩ^-1cm^-1. This result indicated the enhancement of the electrical conductivity of PVA films with Nd³⁺concentration.

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