This title appears in the Scientific Report :
2006
Please use the identifier:
http://dx.doi.org/10.1016/j.jnoncrysol.2006.08.012 in citations.
The structure of phosphate glass evidenced by small angle X-ray scattering
The structure of phosphate glass evidenced by small angle X-ray scattering
Numerous phosphate glass systems with compositions covering the entire glass forming range have been examined by small angle Xray scattering. The experiments were carried out in a widely extended interval of s values between 0.055 and 31 nm(-1). A small angle scattering effect was detected for all s...
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Personal Name(s): | Walter, G. |
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Goerigk, G. / Rüssel, C. | |
Contributing Institute: |
JCNS; JCNS Neutronenstreuung; IFF-INS Streumethoden; IFF-ISM |
Published in: | Journal of non-crystalline solids, 352 (2006) S. 4051 - 4061 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2006
|
Physical Description: |
4051 - 4061 |
DOI: |
10.1016/j.jnoncrysol.2006.08.012 |
Document Type: |
Journal Article |
Research Program: |
Großgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI) Kondensierte Materie |
Series Title: |
Journal of Non-Crystalline Solids
352 |
Subject (ZB): | |
Publikationsportal JuSER |
Numerous phosphate glass systems with compositions covering the entire glass forming range have been examined by small angle Xray scattering. The experiments were carried out in a widely extended interval of s values between 0.055 and 31 nm(-1). A small angle scattering effect was detected for all samples investigated with the exception of the aluminium metaphosphate glass. The small angle scattering recorded indicates the presence of two differently-sized heterogeneity regions of electron density. The small-scale heterogeneities are present in magnesium and zinc phosphate glasses only. Their size is about 1 nm diameter in the magnesium and about 2 nm in the zinc phosphate glasses. The species do not result from liquid-liquid phase separation. Examinations to extract information on the nature of these heterogeneity regions are described in detail. There is no fundamental knowledge on the large-scale heterogeneities established. The small angle scattering suggests that their occurrence is related to water contamination. Anomalous small angle X-ray scattering experiments of a series of zinc polyphosphate glasses and a strontium metaphosphate glass sample are performed to examine the distribution of the Zn or Sr atoms, respectively. (c) 2006 Elsevier B.V. All rights reserved. |