Structure of rare-earth phosphate glasses by neutron diffraction

Richard A. Martin, Philip S. Salmon, Henry E. Fischer, Gabriel J. Cuello

Research output: Contribution to journalArticle

Abstract

Neutron diffraction was used to measure the structure of the phosphate glasses RAl0.30P3.05O9.62, where R denotes Dy or Ho, and RAl0.34P3.20O10.04, where R denotes La or Ce. For each glass, isomorphic structures were assumed and difference function methods were employed to separate, essentially, those correlations involving the rare-earth ion, R3+, from the remainder. The ratio of bridging oxygen, OB, to terminal oxygen, OT, atoms in the PO4 tetrahedra was quantified and in both materials R3+ and Al3+ are found to act as network modifying cations which bind to the OT. The R–OT coordination number is 6.7(1) and 7.5(2) for the Dy/Ho and La/Ce glasses respectively.

Original languageEnglish
Pages (from-to)208-212
Number of pages5
JournalJournal of Non-Crystalline Solids
Volume345-346
Early online date15 Sep 2004
DOIs
Publication statusPublished - 15 Oct 2004
Event10th International Conference on the Physics of Non-Crystalline Solids - Parma, Italy
Duration: 13 Jul 200317 Jul 2003

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