The Debye-Waller factor approaching the glass-transition temperature in phosphate glasses (Articolo in rivista)

Type
Label
  • The Debye-Waller factor approaching the glass-transition temperature in phosphate glasses (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Caponi, S; Fontana, A; Fabiani, E; Gonzalez, MA; Borjesson, L; Matic, A; Armellini, C (2006)
    The Debye-Waller factor approaching the glass-transition temperature in phosphate glasses
    in Journal of non-crystalline solids
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Caponi, S; Fontana, A; Fabiani, E; Gonzalez, MA; Borjesson, L; Matic, A; Armellini, C (literal)
Pagina inizio
  • 4577 (literal)
Pagina fine
  • 4582 (literal)
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  • 352 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Trent, Dipartimento Fis, Res Ctr SOFT, CNR,INFM, I-38050 Povo, Italy; Univ Roma La Sapienza, CNR, INFM, Res Ctr SOFT, I-00185 Rome, Italy; Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France; Chalmers, Dept Appl Phys, SE-41296 Gothenburg, Sweden; CNR, Inst Foton & Nanotecnol, IFN, I-38050 Povo, Italy (literal)
Titolo
  • The Debye-Waller factor approaching the glass-transition temperature in phosphate glasses (literal)
Abstract
  • The temperature dependence of the mean square displacement, (it 2), 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 T, the onset of a pronounced increase of < u(2)> 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. (c) 2006 Elsevier B.V. All rights reserved. (literal)
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