Salzmann, CG and Radaelli, PG and Mayer, E and 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 publication. A version is also 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 > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Physics and Astronomy |
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