ISIS Neutron and Muon Source Data Journal

Thermal expansion and ordering in D2O ice III / IX

Abstract: The high-pressure form of solid water, ice III, is the equilibrium phase in contact with liquid water at pressures from about 2.0 - 3.5 kbar. Consequently, its properties are important in calculating the volume changes on freezing of subsurface oceans inside icy planetary bodies and the buoyancy of icy volcanic melts. The incompressibility (bulk modulus) of ice III as found by quantum mechanical simulations is much lower (<60%) than that of the other ice phases at neighbouring pressures and temperatures, but it is not known whether its thermal expansion is similarly "anomalous". We shall use HRPD to investigate metastable ice III (= ice IX, when proton ordered) by high-resolution neutron powder diffraction so as to determine both its thermal expansion and, from accurate structure refinements, the extent of proton ordering in its crystal structure.

Principal Investigator: Professor Ian Wood
Experimenter: Dr Christopher Howard
Experimenter: Dr Dominic Fortes
Experimenter: Professor David Dobson
Experimenter: Professor Lidunka Vocadlo
Experimenter: Dr Weiwei Wang

DOI: 10.5286/ISIS.E.RB1620334

ISIS Experiment Number: RB1620334

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Ian Wood et al; (2016): Thermal expansion and ordering in D2O ice III / IX, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1620334

Data is released under the CC-BY-4.0 license.