Salzmann, CG;
Radaelli, PG;
Mayer, E;
Finney, JL;
(2009)
Ice XV: A New Thermodynamically Stable Phase of Ice.
PHYS REV LETT
, 103
(10)
, Article 105701. 10.1103/PhysRevLett.103.105701.
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Abstract
A new phase of ice, named ice XV, has been identified and its structure determined by neutron diffraction. Ice XV is the hydrogen-ordered counterpart of ice VI and is thermodynamically stable at temperatures below similar to 130 K in the 0.8 to 1.5 GPa pressure range. The regions of stability in the medium pressure range of the phase diagram have thus been finally mapped, with only hydrogen-ordered phases stable at 0 K. The ordered ice XV structure is antiferroelectric (P1), in clear disagreement with recent theoretical calculations predicting ferroelectric ordering (Cc).
| Type: | Article |
|---|---|
| Title: | Ice XV: A New Thermodynamically Stable Phase of Ice |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.103.105701 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.103.105701 |
| Language: | English |
| Additional information: | © 2009 The American Physical Society |
| Keywords: | NEUTRON POWDER DIFFRACTION, LOW-TEMPERATURES, RAMAN-SPECTRA, VI, TRANSITION, PREDICTION |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/98947 |
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