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Direct observation of R...R distances in rare-earth (R) phosphate glasses by magnetic difference neutron diffraction

Cole, Jacqueline M., Hannon, Alex C., Martin, Richard A., Newport, Robert J. (2006) Direct observation of R...R distances in rare-earth (R) phosphate glasses by magnetic difference neutron diffraction. Physical Review B: Condensed Matter and Materials Physics, 73 (10). ISSN 0163-1829. (doi:10.1103/PhysRevB.73.104210)

Abstract

A magnetic difference neutron diffraction study of a rare-earth (Tb) phosphate glass has revealed exclusively the Tb...Tb distances. The difference between data taken with and without an applied magnetic field of 4 T shows Tb...Tb pairwise atomic correlations at 3.9 and 6.4 A, respectively, with relative coordination numbers of 1:14. The first distance arises when two Tb3+ ions share a common oxygen neighbor, and indicates a clustering of rare-earth ions. The second distance arises when two Tb3+ ions are coordinated to different oxygens in the same PO4 group, in a near-linear arrangement.

Item Type: Article
DOI/Identification number: 10.1103/PhysRevB.73.104210
Subjects: Q Science
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Bob Newport
Date Deposited: 16 Jul 2008 18:10 UTC
Last Modified: 28 May 2019 13:44 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/8229 (The current URI for this page, for reference purposes)
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