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Dielectric properties of water ice, the ice Ih/XI phase transition, and an assessment of density functional theory

Schoenherr, Mandes; Slater, Ben; Hutter, Juerg; VandeVondele, Joost (2014). Dielectric properties of water ice, the ice Ih/XI phase transition, and an assessment of density functional theory. Journal of Physical Chemistry B, 118(2):590-596.

Abstract

The dielectric properties of the hydrogen disordered hexagonal phase (Ih) of water ice have been computed using density functional theory (DFT) based Monte Carlo simulations in the isobaric isothermal ensemble. Temperature dependent data yield a fit for the Curie-Weiss law of the system and hence a prediction of the temperature of the phase transition from the Ih phase to the hydrogen ordered ice XI phase. Direct simulations around the phase transition temperature confirm and refine the predicted phase transition temperatures and provide data for further properties, such as the linear thermal expansion coefficient. Results have been obtained with both hybrid and semilocal density functionals, which yields insight in the performance of the electronic structure method. In particular, the hybrid functional yields significantly more realistic dielectric constants than the semilocal variant, namely epsilon approximate to 116 as opposed to epsilon approximate to 151 at 273 K (epsilon(experiment) = 95). This can be attributed to the tendency of semilocal functionals to be biased to configurations with a large dipole moment, and their overestimation of the dipole moments of these configurations. This is also reflected in the estimates of the Ih/XI transition temperature, which is 70-80 and 90-100 K for the hybrid and semilocal functional respectively. DFT based sampling of the millions of configurations necessary for this work has been enabled by a Tree Monte Carlo algorithm, designed for massively parallel computers.

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:540 Chemistry
Scopus Subject Areas:Physical Sciences > Physical and Theoretical Chemistry
Physical Sciences > Surfaces, Coatings and Films
Physical Sciences > Materials Chemistry
Language:English
Date:2014
Deposited On:17 Oct 2014 11:41
Last Modified:11 Jul 2025 01:39
Publisher:American Chemical Society
ISSN:1520-5207
OA Status:Green
Publisher DOI:https://doi.org/10.1021/jp4103355
PubMed ID:24392971
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