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An ice phase of lowest thermal conductivity
Umeå University, Faculty of Science and Technology, Department of Physics.
2004 (English)In: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 120, no 20, 9612-9617 p.Article in journal (Refereed) Published
Abstract [en]

On pressurizing at temperatures near 130 K, hexagonal and cubic ices transform implosively at 0.8–1 GPa. The phase produced on transformation has the lowest thermal conductivity among the known crystalline ices and its value decreases on increase in temperature. An ice phase of similar thermal conductivity is produced also when high-density amorphous ice kept at 1 GPa transforms on slow heating when the temperature reaches ∼155 K. These unusual formation conditions, the density and its distinguished thermal conductivity, all indicate that a distinct crystal phase of ice has been produced.

Place, publisher, year, edition, pages
2004. Vol. 120, no 20, 9612-9617 p.
Keyword [en]
ïce, high-pressure solid-state phase transformations, thermal conductivity, noncrystalline structure, crystal structure
National Category
Condensed Matter Physics
URN: urn:nbn:se:umu:diva-12304DOI: 10.1063/1.1703523OAI: diva2:151975
Available from: 2011-11-11 Created: 2007-03-30 Last updated: 2011-11-11Bibliographically approved

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