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The incompressibility and thermal expansivity of D2O ice II determined by powder neutron diffraction

Fortes, Andrew D., Wood, Ian Geoffrey, Alfredsson, Maria, Vocadlo, Lidunka, Knight, Kevin S. (2005) The incompressibility and thermal expansivity of D2O ice II determined by powder neutron diffraction. Journal of Applied Crystallography, 38 . pp. 612-618. ISSN 0021-8898. (doi:10.1107/S0021889805014226) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1107/S0021889805014226

Abstract

Using high-resolution neutron powder diffraction, the molar volume of a pure sample of D2O ice II has been measured, within its stability field, at 225 K, over the pressure range 0.25 < P < 0.45 GPa. Ar gas was used as the pressure medium, to avoid the formation of 'stuffed ice' gas hydrates encountered when using He. The third-order Birch - Murnaghan equation of state parameters of helium-free D2O ice II, referenced to 225 K, are: V-0,V-225 = 306.95 +/- 0.04 angstrom(3) ( 1299.7 +/- 0.2 kg m(-3)), K-0,K-225 = 12.13 +/- 0.07 GPa, with K'(0.225) fixed at 6.0. The thermal expansivity of metastable D2O ice II samples recovered to ambient pressure has also been measured, over the range 4.2 < T < 160 K; above 160 K an irreversible transition to ice Ic was observed. The volumetric expansion coefficient, alpha(V), at P = 0 and T = 225 K, is predicted to be 2.48 x 10(-4) K-1.

Item Type: Article
DOI/Identification number: 10.1107/S0021889805014226
Additional information: ISI Document Delivery No.: 946UH Times Cited: 5 Cited Reference Count: 50 Part 4
Uncontrolled keywords: Phase-Diagram, High Pressure CRYSTAL-STRUCTURE INFRARED SPECTRA X-RAY WATER TEMPERATURE IH TRANSITIONS POLYMORPHS
Subjects: Q Science
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Maria Alfredsson
Date Deposited: 03 Sep 2008 14:11 UTC
Last Modified: 28 May 2019 13:40 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/4776 (The current URI for this page, for reference purposes)
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