Asymmetry of the coexistence curve in binary systems. Size effect

Autor:	Pierre Damay, Françoise Leclercq
Rok vydání:	1991
Předmět:	Binodal media_common.quotation_subject General Physics and Astronomy Binary number Thermodynamics Asymmetry Mean field theory Critical point (thermodynamics) Ising model Statistical physics Binary system Physical and Theoretical Chemistry Scaling media_common Mathematics
Zdroj:	The Journal of Chemical Physics. 95:590-599
ISSN:	1089-7690 0021-9606
DOI:	10.1063/1.461787
Popis:	The asymmetry of the coexistence curve in binary systems is either due to a difference of size between the components or to mixed fields as seen in the liquid–vapor case. The size effect may be corrected if the proper order parameter is used. Taking advantage of the many formal possibilities of choosing the order parameter in these systems, we show that the size effect may be exactly corrected for asymmetric mean field models. Making the same type of calculation on real systems with critical indices, we found that the same type of correction is possible. In these cases, there were no mixed field effects detected (t1−α divergence of the diameter), at least in a reduced temperature range t
Databáze:	OpenAIRE
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