Electrical resistance measurements are reported on the binary liquid mixtures CS2 + CH3CN and CS2 + CH3NO2 with special reference to the critical region. Impurity conduction seems to be the dominant mechanism for charge transport. For the liquid mixture filled at the critical composition, the resistance of the system aboveTc follows the relationR=Rc−A(T−Tc)b withb=0·6±0·1. BelowTc the conductivities of the two phases obey a relation σ2−σ1=B(Tc−T)β with β=0·34±0·02, the exponent of the transport coefficient being the same as the exponent of the order parameter, an equilibrium property.
Volume 96, 2022
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