Antonoff's Rule and the Structure of Interfaces near Tricritical Points

21 April 1975

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 34 (16) , 999-1002
https://doi.org/10.1103/physrevlett.34.999

Abstract

The Van der Waals theory of surface tension and interface structure is extended to three-phase equilibrium. The theory predicts that near a tricritical point the three interfacial tensions will satisfy "Antonoff's rule" in the form

σ_{α γ} = σ_{α β} + σ_{β γ}

, where

β

is the distinguished phase, and that the composition profile of the

α γ

interface will be qualitatively different from that of the

α β

and

β γ

interfaces.

Keywords

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