Formation of amorphous ice by careful annealing of ice XII

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DOIResolve DOI: http://doi.org/10.1103/PhysRevB.63.212201
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TypeArticle
Journal titlePhys. Rev. B
Physical Review B
Volume63
Issue21
Pages212201–; # of pages: 1
AbstractThermally induced transformations of ice XII were characterized using the Raman spectra of the isolated O-D vibration of 5% HDO molecules in H2O ice XII. Spectra were collected continuously as samples were annealed between 77�160 K. Raman spectra first show a sharp peak centered on ??=2424 cm-1 from ice XII at 120 K. As the sample is further annealed isothermally at 120 K this peak broadens and shifts to higher frequency ??=2439 cm-1 and full width at half maximum 65 cm-1, indicating the production of low-density amorphous ice by decompression amorphization. Ice Ic is formed upon further annealing at 130�140 K. The local hydrogen bond strength of the resulting amorphous phase was found to be close to that of glassy water.
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AffiliationNational Research Council Canada; NRC Steacie Institute for Molecular Sciences
Peer reviewedNo
NPARC number12329096
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Record identifier4ed1f429-0701-49cd-891f-285a95d6c772
Record created2009-09-10
Record modified2016-05-09
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