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

Cole, Jacqueline M. and Hannon, Alex C. and Martin, Richard A. and 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. (Full text available)

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http://dx.doi.org/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
Subjects: Q Science
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group
Depositing User: Bob Newport
Date Deposited: 16 Jul 2008 18:10
Last Modified: 30 May 2014 11:13
Resource URI: http://kar.kent.ac.uk/id/eprint/8229 (The current URI for this page, for reference purposes)
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