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Structure and thermal properties of yttrium alumino-phosphate glasses
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Martin, Richard A., Salmon, P. (Philip), Carroll, Donna L., Smith, Mark E. and Hannon, Alex C. (2008) Structure and thermal properties of yttrium alumino-phosphate glasses. In: 13th Conference on Liquid and Amorphous Metals, Ekaterinburg, Russia, Jul 08-14, 2007. Published in: Journal of Physics: Condensed Matter, Volume 20 (Number 11). Article No. 115204. doi:10.1088/0953-8984/20/11/115204 ISSN 0953-8984.
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Official URL: http://dx.doi.org/10.1088/0953-8984/20/11/115204
Abstract
The structure and thermal properties of yttrium alumino-phosphate glasses, of nominal composition (Y2O3)(0.31-z)(Al2O3)(z)(P2O5)(0.69) with 0 less than or similar to z less than or similar to 0.31, were studied by using a combination of neutron diffraction, Al-27 and P-31 magic angle spinning nuclear magnetic resonance, differential scanning calorimetry and thermal gravimetric analysis methods. The Vickers hardness of the glasses was also measured. The data are compared to those obtained for pseudo-binary Al2O3-P2O5 glasses and the structure of all these materials is rationalized in terms of a generic model for vitreous phosphate materials in which Y3+ and Al3+ act as modifying cations that bind only to the terminal (non-bridging) oxygen atoms of PO4 tetrahedra. The results are used to help elucidate the phenomenon of rare-earth clustering in phosphate glasses which can be reduced by substituting Al3+ ions for rare-earth R3+ ions at fixed modifier content.
| Item Type: | Conference Item (UNSPECIFIED) | ||||
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| Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
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| Divisions: | Administration > University Executive Office Faculty of Science, Engineering and Medicine > Science > Physics |
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| Library of Congress Subject Headings (LCSH): | Yttrium phosphates, Glass -- Thermal properties, Aluminum oxide | ||||
| Journal or Publication Title: | Journal of Physics: Condensed Matter | ||||
| Publisher: | Institute of Physics Publishing Ltd. | ||||
| ISSN: | 0953-8984 | ||||
| Official Date: | 19 March 2008 | ||||
| Dates: |
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| Volume: | Volume 20 | ||||
| Number: | Number 11 | ||||
| Number of Pages: | 13 | ||||
| Page Range: | Article No. 115204 | ||||
| DOI: | 10.1088/0953-8984/20/11/115204 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC) | ||||
| Title of Event: | 13th Conference on Liquid and Amorphous Metals | ||||
| Type of Event: | Conference | ||||
| Location of Event: | Ekaterinburg, Russia | ||||
| Date(s) of Event: | Jul 08-14, 2007 |
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