Local structures of rare-earth ions in glasses: the 'crystal-chemistry' approach
Local structures of rare-earth ions in glasses: the 'crystal-chemistry' approach
A 'crystal-chemistry' model is proposed to evaluate the rare-earth local structure in glass based on the modified-random-network (MRN) model in glass structure. Three influential factors are summarized, concerning the coordination number, the regularity of the site around the ion. and the spacing between ions. The spectral properties of rare-earth ions in glasses is well described and predicted by the proposed 'crystal-chemistry' model. The concentration-quenching effect of rare-earth ions in glasses in terms of ion-ion separation is analyzed by this model in relation to the role as glass-modifier or glass-intermediate of the rare-earth ion in the glass. The model suggests that glasses in which the rare-earth ions act as intermediates are likely to show less concentration-quenching effect.
261-267
Wang, J.
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Brocklesby, W.S.
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Lincoln, J.R.
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Townsend, J.E.
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Payne, D.N.
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1993
Wang, J.
53d8d8bd-3c17-406e-9acf-961cc86b9a00
Brocklesby, W.S.
c53ca2f6-db65-4e19-ad00-eebeb2e6de67
Lincoln, J.R.
ad36fc80-d77d-459d-b0c7-27530bf6ff7b
Townsend, J.E.
a5a6f6ef-adb0-4072-8dcb-b6f5b5a47e64
Payne, D.N.
4f592b24-707f-456e-b2c6-8a6f750e296d
Wang, J., Brocklesby, W.S., Lincoln, J.R., Townsend, J.E. and Payne, D.N.
(1993)
Local structures of rare-earth ions in glasses: the 'crystal-chemistry' approach.
Journal of Non-Crystalline Solids, 163 (3), .
(doi:10.1016/0022-3093(93)91303-K).
Abstract
A 'crystal-chemistry' model is proposed to evaluate the rare-earth local structure in glass based on the modified-random-network (MRN) model in glass structure. Three influential factors are summarized, concerning the coordination number, the regularity of the site around the ion. and the spacing between ions. The spectral properties of rare-earth ions in glasses is well described and predicted by the proposed 'crystal-chemistry' model. The concentration-quenching effect of rare-earth ions in glasses in terms of ion-ion separation is analyzed by this model in relation to the role as glass-modifier or glass-intermediate of the rare-earth ion in the glass. The model suggests that glasses in which the rare-earth ions act as intermediates are likely to show less concentration-quenching effect.
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Published date: 1993
Identifiers
Local EPrints ID: 78289
URI: http://eprints.soton.ac.uk/id/eprint/78289
ISSN: 0022-3093
PURE UUID: b7c3e2d9-451e-4586-8eb7-b39ca3d1ea2a
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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 02:34
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Author:
J. Wang
Author:
J.R. Lincoln
Author:
J.E. Townsend
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