Electrical resistance and dielectric constant studies in a binary liquid system in the critical region

Abstract

This thesis presents an experimental investigation of electrical resistance and dielectric constant anomalies in a critical binary liquid system (the polar + non-polar mixture methanol + cyclohexane). Since the critical exponent values representing the behaviour of the derivative of the electrical resistance and the dielectric constant with respect to temperature (dR/dT) and (dε/dT) are not yet completely understood for binary liquid systems, the present study is aimed at determining these exponents. Both electrical resistance and dielectric constant measurements are made over a wide frequency range (10 Hz to 100 kHz) to see also whether there is any frequency dispersion in the critical exponents.