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Issue 23, 2013
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Ultra-slow dynamics in low density amorphous ice revealed by deuteron NMR: indication of a glass transition

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Abstract

The postulated glass–liquid transition of low density amorphous ice (LDA) is investigated with deuteron NMR stimulated echo experiments. Such experiments give access to ultra-slow reorientations of water molecules on time scales expected for structural relaxation of glass formers close to the glass–liquid transition temperature. An involved data analysis is necessary to account for signal contributions originating from a gradual crystallization to cubic ice. Even if some ambiguities remain, our findings support the view that pressure amorphized LDA ices are of glassy nature and undergo a glass–liquid transition before crystallization.

Graphical abstract: Ultra-slow dynamics in low density amorphous ice revealed by deuteron NMR: indication of a glass transition

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Article information


Submitted
23 Feb 2013
Accepted
11 Apr 2013
First published
10 May 2013

Phys. Chem. Chem. Phys., 2013,15, 9308-9314
Article type
Paper

Ultra-slow dynamics in low density amorphous ice revealed by deuteron NMR: indication of a glass transition

F. Löw, K. Amann-Winkel, T. Loerting, F. Fujara and B. Geil, Phys. Chem. Chem. Phys., 2013, 15, 9308
DOI: 10.1039/C3CP50818H

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