Impurity effects on the critical behaviour of the electrical resistance of binary liquid mixtures

Kumar, Anil and Gopal, ESR (1979) Impurity effects on the critical behaviour of the electrical resistance of binary liquid mixtures. In: Pramana - Journal of Physics, 12 (5). pp. 511-522.

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Abstract

The electrical resistance of the binary liquid system cyclohexane + acetic anhydride is measured, in the critical region, both in the pure mixture and when the mixture is doped with small amounts (≈ 100 ppm) of H2O/D2O impurities.T c was approached to aboutt=3×10−6 wheret=(T −T c )/T c . The critical exponentb ≈ 0.35 in the fit of the resistance data to the equationdR/dT ∼t −b does not seem to be affected appreciably by the impurities. There is a sign reversal ofdR/dt in the non-critical region. Binary liquid systems seem to violate the universality of the critical resistivity.

Item Type:	Journal Article
Publication:	Pramana - Journal of Physics
Publisher:	Indian Academy of Sciences
Additional Information:	Copyright of this article belongs to Indian Academy of Sciences.
Keywords:	Critical phenomena; binary systems; transport properties; critical indices;universality.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	23 Dec 2010 05:31
Last Modified:	23 Dec 2010 05:31
URI:	http://eprints.iisc.ac.in/id/eprint/34386

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