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Monte Carlo calculations of the free energy of ice-like structures using the self-referential method

Atamas, Alexander and Koudriachova, Marina V. and de Leeuw, Simon W. and Sweatman, Martin B. (2011) Monte Carlo calculations of the free energy of ice-like structures using the self-referential method. Molecular Simulation, 37 (4). pp. 284-292. ISSN 0892-7022

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Abstract

The self-referential method is a recently developed technique to compute the free energy of molecular crystals. In this paper, the method is extended to systems composed of nonlinear rigid molecules and applied to obtain the Helmholtz free energy of ice VII, hexagonal ice, cubic ice, and the Gibbs free energy of the empty structure I (sI) clathrate hydrate and fully occupied methane sI. It is shown that the method provides a viable alternative to other techniques to determine the free energy of solids. Good agreement with available reference literature data is found. We expect that the technique can be applied to a wide range of molecular crystals.

Item type: Article
ID code: 30980
Keywords: free energy, Monte Carlo, ice, clathrate, molecular simulations, computer simulations, potential functions, crystalline solids, phase coexistence, liquid water, integration, model, equilibria, Chemical engineering, Modelling and Simulation, Materials Science(all), Chemical Engineering(all), Chemistry(all), Information Systems, Condensed Matter Physics
Subjects: Technology > Chemical engineering
Department: Faculty of Engineering > Chemical and Process Engineering
Related URLs:
Depositing user: Pure Administrator
Date Deposited: 13 May 2011 13:15
Last modified: 27 Mar 2014 09:20
URI: http://strathprints.strath.ac.uk/id/eprint/30980

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