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(114) Production(s) de LE PARC R.
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High Pressure amorphization
Auteur(s): Le Parc R.
(Affiches/Poster)
44 th EHPRG International conference (Prague, Czech Republic, FR), 2006-09-04 |
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In situ measurements of density fluctuations and compressibility in silica glass as a function of temperature and thermal history 
Auteur(s): Levelut C., Faivre A., Le Parc R., Champagnon Bernard, Hazemann Jean-Louis, Simon J.
(Article) Publié:
Physical Review B, vol. 72 p.224201 (2005)
Texte intégral en Openaccess : 
Ref HAL: hal-00011136_v1
Ref Arxiv: cond-mat/0510266
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
Résumé: In this paper, small-angle X-ray scattering measurements are used to determine the different compressibility contributions, as well as the isothermal compressibility, in thermal equilibrium in silica glasses having different thermal histories. Using two different methods of analysis, in the supercooled liquid and in the glassy state, we obtain respectively the temperature and fictive temperature dependences of the isotheraml compressibility. The values obtained in the glass and supercooled liquid states are very close to each other. They agree with previous determinations of the literature. The compressibility in the glass state slightly decreases with increasing fictive temperature. The relaxational part of the compressibility is also calculated and compared to previous determinations. We discussed the small differences between the different determinations.
Commentaires: accepte dans physical review B
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The absorption of L-Cysteine on Au(110) in ultra high vacuum and electrochemical environments
Auteur(s): Isted G.E., Martin D.S., Smith C.I., Le Parc R., Cole R.J., Weightman P.
(Article) Publié:
Physica Status Solidi (C), vol. 2, 12 p.4012-4016 (2005)
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Characterization of the glass transition in vitreous silica by temperature scanning small-angle X-ray scattering
Auteur(s): Brüning Ralf, Levelut C., Faivre A., Le Parc R., Simon J., Bley Françoise, Hazemann Jean-Louis
(Article) Publié:
Europhysics Letters (Epl), vol. 70 p.211 (2005)
Texte intégral en Openaccess :
Ref HAL: hal-00004494_v1
Ref Arxiv: cond-mat/0503439
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
Résumé: The temperature dependence of the x-ray scattering in the region below the first sharp diffraction peak was measured for silica glasses with low and high OH content (GE-124 and Corning 7980). Data were obtained upon scanning the temperature at 10, 40 and 80 K/min between 400 K and 1820 K. The measurements resolve, for the first time, the hysteresis between heating and cooling through the glass transition for silica glass, and the data have a better signal to noise ratio than previous light scattering and differential thermal analysis data. For the glass with the higher hydroxyl concentration the glass transition is broader and at a lower temperature. Fits of the data to the Adam-Gibbs-Fulcher equation provide updated kinetic parameters for this very strong glass. The temperature derivative of the observed X-ray scattering matches that of light scattering to within 14%.
Commentaires: EurophysicsLetters, in press
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Influence of thermal history on the structure and physical properties of oxide glasses
Auteur(s): Levelut C., Le Parc R., Faivre A., Brüning Ralf, Malki Mohamed, Champagnon Bernard
Conférence invité: 5th International Discussion Meeting on relaxations in Complex Systems (Lille, France, FR, 2005-07-07)
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Structural evolution in Li and Na aluminophosphate glasses
Auteur(s): Viviani David, Faivre A., Levelut C., Smaihi M., Le Parc R.
(Affiches/Poster)
5th international discussion meeling on relaxations in complex systems (Lille, France, FR), 2005-08-07 |
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Structure and Dynamic in Silicate Glasses in Situ Temperature Raman Spectroscopic Measurements
Auteur(s): Le Parc R.
(Affiches/Poster)
5th International Discussion Meeting on Relaxations in Complex Systems (Lille, France, FR), 2005-07-07 |
