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 language||English (US)|
|Number of pages||1|
|Journal||Physical Review Letters|
|State||Published - 2003|
ASJC Scopus subject areas
- Physics and Astronomy(all)