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

Cole, J.M. and Hannon, A.C. and Martin, R.A. and Newport, R.J. (2006) Direct observation of R...R distances in rare-earth (R) phosphate glasses by magnetic difference neutron diffraction. Physical Review B, 73 (10). ISSN 1098-0121. (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: 02 Dec 2011 12:09
Resource URI: http://kar.kent.ac.uk/id/eprint/8229 (The current URI for this page, for reference purposes)
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