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The Debye-Waller fa...
The Debye-Waller factor approaching the glass-transition temperature in phosphate glasses
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- Caponi, S. (author)
- Universita degli Studi di Trento,University of Trento,Universita degli Studi di Roma la Sapienza,Sapienza University of Rome
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- Fontana, A. (author)
- Universita degli Studi di Trento,University of Trento,Universita degli Studi di Roma la Sapienza,Sapienza University of Rome
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- Fabiani, E. (author)
- Institut Laue-Langevin
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- González, M. A. (author)
- Institut Laue-Langevin
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- Börjesson, Lars, 1957 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Matic, Aleksandar, 1968 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Armellini, C. (author)
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(creator_code:org_t)
- Elsevier BV, 2006
- 2006
- English.
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In: Journal of Non-Crystalline Solids. - : Elsevier BV. - 0022-3093. ; 352:42-49 SPEC. ISS., s. 4577-4582
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Abstract
Subject headings
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- The temperature dependence of the mean square displacement, 〈u2〉, calculated by elastic neutron scattering for two phosphate glasses, (AgI)x(AgPO3)1-x with x = 0.3, 0.55, is analysed. The studied samples are probed in a wide range of temperatures going from a few tens of K up to the glass transition temperature and well into the undercooled liquid state. In the low temperature regime a solid like behaviour appears, showing a linear temperature dependence of the Debye-Waller factor, while around Tg the onset of a pronounced increase of 〈u2〉 is observed. The temperature dependence of the normalized elastic intensity and the drawn out Debye-Waller factor are fitted and analyzed by the theoretical previsions of Mode Coupling Theory finding a good agreement. © 2006 Elsevier B.V. All rights reserved.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Keramteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Ceramics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- Structural relaxation
- Neutron diffraction/scattering
- Glass transition
- Phosphates
Publication and Content Type
- art (subject category)
- ref (subject category)
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