Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Champagnon, Bernard"'
Publikováno v:
J. Appl. Phys. 21 September 2016; 120 (11): 115901
Vitreous GeO$_2$ has been compressed at high temperature, to investigate the effect of thermal activation on the structural reorganization during compression. The measurements were performed in-situ using micro Raman spectroscopy under pressure up to
Externí odkaz:
http://arxiv.org/abs/2402.05326
Autor:
Cornet, Antoine, Martinez, Valerie, de Ligny, Dominique, Champagnon, Bernard, Martinet, Christine
Publikováno v:
J. Chem. Phys. 7 March 2017; 146 (9): 094504
Densified SiO2 glasses, obtained from different pressure and temperature routes have been annealed over a wide range of temperature far below the glass transition temperature (500$^\circ$C-900$^\circ$C). Hot and cold compressions were useful to separ
Externí odkaz:
http://arxiv.org/abs/2402.05315
Autor:
Martinet, Christine, Kassir-Bodon, Assia, Deschamps, Thierry, Cornet, Antoine, Floch, Sylvie Le, Martinez, Valerie, Champagnon, Bernard
Publikováno v:
J. Phys.: Condens. Matter 27 325401 (2015); Correction: J. Phys.: Condens. Matter 28 329501 (2016)
Densified silica can be obtained by different pressure and temperature paths and for different stress conditions, hydrostatic or including shear. The density is usually the macroscopic parameter used to characterize the different compressed silica sa
Externí odkaz:
http://arxiv.org/abs/2402.05311
Autor:
Vandembroucq, Damien, Deschamps, Thierry, Coussa, Camille, Perriot, Antoine, Barthel, Etienne, Champagnon, Bernard, Martinet, Christine
Publikováno v:
Journal of Physics Condensed Matter / JOURNAL OF PHYSICS-CONDENSED MATTER 20 (2008) 485221
In addition of a flow, plastic deformation of structural glasses (in particular amorphous silica) is characterized by a permanent densification. Raman spectroscopic estimators are shown to give a full account of the plastic behavior of silica under p
Externí odkaz:
http://arxiv.org/abs/0802.3336
Publikováno v:
Journal of Non Crystalline Solids 352 (10/2006) 4495
We studied a set of float glass samples prepared with different fictive temperature by previous annealing around the glass transition temperature. We compared the results to previous measurements on a series of amorphous silica samples, also prepared
Externí odkaz:
http://arxiv.org/abs/cond-mat/0610698
Autor:
Levelut, Claire, Faivre, Annelise, Parc, Rozenn Le, Champagnon, Bernard, Hazemann, Jean-Louis, Simon, Jean-Paul
Publikováno v:
Physical Review B 72 (2005) 224201
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
Externí odkaz:
http://arxiv.org/abs/cond-mat/0510266
Autor:
Perriot, Antoine, Martinez, Valérie, Grosvalet, Laurent, Martinet, Christine, Champagnon, Bernard, Vandembroucq, Damien, Barthel, Etienne
Publikováno v:
Journal of the American Ceramic Society 89 (2006) 596
Raman microspectroscopy was used to characterize amorphous silica plastic behavior. Using a correlation between Raman spectrum and density, a map of the local residual indentation-induced densification is obtained. The existence of a densification-in
Externí odkaz:
http://arxiv.org/abs/cond-mat/0409726
Autor:
Wilding, Martin C., Wilson, Mark, McMillan, Paul F., Benmore, Chris J., Weber, J.K.R., Deschamps, Thierry, Champagnon, Bernard
Publikováno v:
In Journal of Non-Crystalline Solids 1 January 2015 407:228-234
Autor:
Nardou, Eric, Vouagner, Dominique, Jurdyc, Anne-Marie, Berthelot, Alice, Pillonnet, Anne, Sablonière, Virginie, Champagnon, Bernard
Publikováno v:
In Optical Materials 2011 33(12):1907-1910
Autor:
Nardou, Eric, Vouagner, Dominique, Jurdyc, Anne-Marie, Berthelot, Alice, Pillonnet, Anne, Sablonière, Virginie, Bessueille, François, Champagnon, Bernard
Publikováno v:
In Journal of Non-Crystalline Solids 2011 357(8):1895-1899