| 1 | Author
| Z. Naturforsch | Requires cookie* | | Title
| A Neutron and X-ray Diffraction Study of the Structure of Nd Phosphate Glasses  | | | Abstract
| Diffraction experiments were performed on two (Nd203)x(P205)i_ x glasses for studying the en vironmental order of the Nd3+ cations. In case of the metaphosphate glass (x = 0.25) a combination of X-ray and neutron diffraction data was used to separate the N d-0 and 0 -0 first neighbor peaks. An N d-0 coordination number of 6.6±0.3 and a mean N d-0 distance of (0.239±0.001) nm were determined. In the ultraphosphate glass studied (x = 0.20) these values increase to 6.9±0.3 and (0.240±0.001) nm where the N d-0 coordination number is equal to the number of terminal oxygen atoms (0 T) which are available for coordination of each Nd3+ cation. This indicates the formation of NdOn polyhedra not sharing any O atom where also all 0 T's are in N d-0T-P positions. In the metaphosphate glass the NdO" polyhedra have to share some 0 T sites. | | |
Reference
| Z. Naturforsch. 56a, 237—243 (2001); received January 8 2001 | | |
Published
| 2001 | | |
Keywords
| Neutron Scattering, X-ray Scattering, Short-range Order, Phosphate Glasses | | |
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| default:Reihe_A/56/ZNA-2001-56a-0237.pdf | | | Identifier
| ZNA-2001-56a-0237 | | | Volume
| 56 | |
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