Identification of the relative distribution of rare-earth ions in phosphate glasses

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

Research output: Contribution to journalArticle

Abstract

The relative distribution of rare-earth ions R3+ (Dy3+ or Ho3+) in the phosphate glass RAl0.30P3.05O9.62 was measured by employing the method of isomorphic substitution in neutron diffraction. It is found that 7.9(7) R-R nearest neighbors reside at 5.62(6) Angstrom in a network made from interlinked PO4 tetrahedra. Provided that the role of Al is explicitly considered, a self-consistent account of the local matrix atom correlations can be developed in which there are 1.68(9) bridging and 2.32(9) terminal oxygen atoms per phosphorus.
Original languageEnglish
Article number185501
Number of pages4
JournalPhysical Review Letters
Volume90
Issue number18
DOIs
Publication statusPublished - 6 May 2003

Bibliographical note

©2003 American Physical Society

Keywords

  • rare-earth ions
  • isomorphic substitution
  • neutron diffraction
  • oxygen

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