Observation of the doubling of critical exponents in reentrant phase transitions

Narayanan, T and Kumar, A and Gopal, ESR (1990) Observation of the doubling of critical exponents in reentrant phase transitions. In: Physics Letters A, 144 (6-7). pp. 371-375.

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Abstract

Electrical resistance (R) measurements are reported for ternary mixtures of 3-methylpyridine, water and heavy water as a function of temperature (T) and heavy water content in total water. These mixtures exhibit a limited two-phase region marked by a loop size (ΔT) that goes to zero as the double critical point (DCP) is approached. The measurements scanned the ΔT range 1.010°C less-than-or-equals, slant ΔT less-than-or-equals, slant 77.5°C. The critical exponent (θ), which signifies the divergence of ∂R/∂T, doubles within our experimental uncertainties as the DCP is reached very closely.

Item Type:	Journal Article
Publication:	Physics Letters A
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	27 Apr 2011 05:20
Last Modified:	27 Apr 2011 05:20
URI:	http://eprints.iisc.ac.in/id/eprint/35003

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