Intermediate-Range Order in Permanently Densified [Formula presented] Glass

S. Sampath, C. J. Benmore, K. M. Lantzky, J. Neuefeind, Kurt Leinenweber, D. L. Price, Jeffery Yarger

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Information about the partial structure factors of densified [Formula presented] glass has been obtained from neutron and x-ray diffraction measurements. Densification causes a reduction in the length scale of the intermediate range order (IRO). The difference structure factors obtained by combining the x-ray and neutron data so as to eliminate one partial structure factor at a time shows the greatest effects when the Ge-Ge correlations are eliminated and least when O-O correlations are eliminated. This implies that the reduced length scale results from a decrease in the next-nearest neighbor Ge-O and O-O distance caused by a rotation about the Ge-O-Ge bonds and a distortion of the [Formula presented] tetrahedra.

Original languageEnglish (US)
Number of pages1
JournalPhysical Review Letters
Volume90
Issue number11
DOIs
StatePublished - Jan 1 2003

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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