| | 1 | Author
| Uwe Hoppe, Rainer Kranold, Emil Gattefa, Jörg Neuefeindb, DavidA. Keenc | Requires cookie* | | | Title
| An X-ray and Neutron Scattering Study of the Structure of Zinc Vanadate Glasses  | | | | Abstract
| The short-range order of vitreous V20 5 and of three (Zn0)Jt(V20 5)1_x glasses with x = 0.2, 0.4, and 0.5 is studied by X-ray and neutron diffraction experiments where the change of the contrast allows to resolve the V -0 and Z n -0 correlations. The V -0 and the Z n -0 first-neighbor peaks are approximat ed by several Gaussian functions. In case of vitreous V20 5 two obvious V -0 distances exist which are related with V 0 4 and V 0 5 units. With ZnO additions the V -O coordination number decreases from 4.4 in vitreous V20 5 to 4.0 in the metavanadate glass where the strongest decrease of the fraction of V 0 5 units is found for glasses of * < 0.2. Dominantly, the V 0 5 groups are linked with the neighboring units by comers. The Z n-0 coordination numbers of the modified glasses are about five with closest dis tances of = 0.200 nm. | | | |
Reference
| Z. Naturforsch. 56a, 478—4 (2001); received April 3 2001 | | | |
Published
| 2001 | | | |
Keywords
| Neutron Scattering, X-ray Scattering, Short-range Order, Vanadate Glasses | | | |
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| default:Reihe_A/56/ZNA-2001-56a-0478.pdf | | | | Identifier
| ZNA-2001-56a-0478 | | | | Volume
| 56 | |
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