Critical versus tricritical phase transitions in symmetric electrolytes

In view of recent experimental results on phase transitions in symmetric electrolytes, we have critically reanalyzed our previous theoretical treatment of this problem [Phys. Lett. A 132 (1988) 347]. In this Letter we discuss the possibility of tricritical behavior in symmetric electrolytes. It is a...

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Bibliographic Details
Published in:Physics letters. A 1993-04, Vol.175 (5), p.366-369
Main Authors: Kholodenko, A.L., Beyerlein, A.L.
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Liquid-vapor equilibria
Phase equilibria
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Summary:In view of recent experimental results on phase transitions in symmetric electrolytes, we have critically reanalyzed our previous theoretical treatment of this problem [Phys. Lett. A 132 (1988) 347]. In this Letter we discuss the possibility of tricritical behavior in symmetric electrolytes. It is argued that the phase behavior of symmetric electrolytes could be well understood by employing the antiferromagnetic version of the Blume-Emery-Griffiths model. We provide a Landau-type analysis of this model which yields the exponents γ = 1 and β = 1 2 observed in recent experiments.
ISSN:0375-9601
1873-2429
DOI:10.1016/0375-9601(93)90636-E