Ice XV: A New Thermodynamically Stable Phase of Ice.
PHYS REV LETT
, Article 105701. 10.1103/PhysRevLett.103.105701.
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).
|Title:||Ice XV: A New Thermodynamically Stable Phase of Ice|
|Open access status:||An open access version is available from UCL Discovery|
|Additional information:||© 2009 The American Physical Society|
|Keywords:||NEUTRON POWDER DIFFRACTION, LOW-TEMPERATURES, RAMAN-SPECTRA, VI, TRANSITION, PREDICTION|
|UCL classification:||UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Maths and Physical Sciences
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