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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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Publication details

The article was received on 23 Feb 2013, accepted on 11 Apr 2013 and first published on 10 May 2013


Article type: Paper
DOI: 10.1039/C3CP50818H
Phys. Chem. Chem. Phys., 2013,15, 9308-9314

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    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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