Abstract
The temperature dependence of d.c. conductivity was investigated in composites of copper (Cu) and poly(vinyl-alcohol) (PVA) prepared by compression of a mixture. A minimum appeared in the conductivity vs reciprocal temperature curves, which is discussed as a result of the competition between hopping and thermally activated modes of conduction. It was also found that the conduction of Cu-PVA composites obeys a percolation model. Dependences of reverse current vs voltage were investigated and discussed in terms of a clean-up effect of charge carriers. Quantitative analysis was carried out to determine the activation energy, drift mobility and carrier concentration.
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Mosaad, M.M., Basha, A.F. Electrical conduction in copper-poly(vinyl-alcohol) composites. Czech J Phys 40, 569–575 (1990). https://doi.org/10.1007/BF01599780
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DOI: https://doi.org/10.1007/BF01599780