Showing papers by "A.K. Pal published in 1978"
TL;DR: In this article, the effect of temperature on the electrical resistivity of polyvinylchloride-copper composites was studied between 0 and 40°C using a four-electrode device.
Abstract: Polyvinylchloride‐copper composites at different volume percent of copper are annealed at 50 °C for 10 days. The effect of temperature on the electrical resistivity of the resulting composites is studied between 0 and 40 °C using a four‐electrode device. Three clearly distinguished behaviors of the composites are observed after prolonged annealing. They exhibit (a) a positive temperature coefficient of resistance, (b) higher discrepancy in resistivity values for all metal loadings, and (c) an Ohmic current‐voltage relationship. We try to explain the positive temperature coefficient of resistance through the reduction of the contact pressure between the metal particles with increase in temperature.
7 citations