Sinclair, Roger N., Haworth, Richard, Wright, Adrian C., Parkinson, Ben G., Holland, Diane, Taylor, Jon W., Vedishcheva, Natalia M., Polyakova, Irina G., Shakhmatkin, Boris A., Feller, Steven A., Rijal, B. and Edwards, T. (2006) Neutron spectroscopic studies of caesium borate crystals and glasses. In: 5th International Conference on Borate Glasses, Crystals and Melts, Trento, Italy, Jul 10-14, 2005. Published in: Physics and Chemistry of Glasses - European Journal of Glass Science and Technology Part B, Vol.47 (No.4). pp. 405-411.

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Abstract

Inelastic neutron scattering data have been measured for the vitreous forms of caesium enneaborate and pentaborate along with polycrystalline caesium enneaborate, pentaborate and triborate. The known crystal structures allow associated superstructural unit modes in the neutron weighted vibrational density of states (VDOS) of the glass forms to be identified. The widths of the features in the VDOS give additional information on the dispersive nature of the modes and hence the molecular character. To assist in the identification of larger structural units, new Raman measurements have been completed for a range of five glasses and four crystalline compositions in the same system. It is concluded that boroxol units are only formed in vitreous samples containing alkali tip to the tetraborate composition. A glass with the enneaborate composition contains both boroxol and triborate units, while glasses of pentaborate composition appeal, to contain pentaborate and possibly triborate groups.

Item Type:	Conference Item (Paper)
Subjects:	Q Science > QD Chemistry T Technology > TP Chemical technology
Divisions:	Faculty of Science > Physics
Journal or Publication Title:	Physics and Chemistry of Glasses - European Journal of Glass Science and Technology Part B
Publisher:	Society of Glass Technology
ISSN:	1753-3562
Date:	August 2006
Volume:	Vol.47
Number:	No.4
Number of Pages:	7
Page Range:	pp. 405-411
Status:	Not Peer Reviewed
Publication Status:	Published
Conference Paper Type:	Paper
Title of Event:	5th International Conference on Borate Glasses, Crystals and Melts
Type of Event:	Conference
Location of Event:	Trento, Italy
Date(s) of Event:	Jul 10-14, 2005
URI:	http://wrap.warwick.ac.uk/id/eprint/32440

Data sourced from Thomson Reuters' Web of Knowledge

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