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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 2:28 |
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Conference: Bucharest University Faculty of Physics 2005 Meeting
Section: Theoretical Physics and Applied Mathematics Seminar
Title:
Phase Separation in an Exactly Solvable Model Binary Solution with Three-Body Interactions and Intermolecular Bonding
Authors:
Radu P. Lungu
Affiliation:
Bucharest University Physics Department
E-mail
RaduPLungu@yahoo.com
Keywords:
phase transition, Ising models
Abstract:
A model is presented in which the bonds of a honeycomb lattice are covered by rod-like molecules of type AA and BB, molecular ends near a common site having both three-body interactions and orientation-dependent bonding between two A molecular ends and between an A and a B molecular end.
Phase diagrams corresponding to the separation into AA-rich and BB-rich phases are calculated exactly. Depending on the relative strengths of the interactions, one of several qualitatively different types of phase diagrams can result, including diagrams containing phenomena such as a double critical point or two separate asymmetric closed loops.
By imagining the AA and BB molecules to shrink to a point, the model can be seen to be equivalent to a two-component system of interacting $ A $ and $ B $ molecules on the resulting Kagome lattice.
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