%0 Journal Article
%T Density and concentration fluctuations in SiO2-GeO2 optical fiber glass investigated by small angle x-ray scattering
%+ Laboratoire des colloïdes, verres et nanomatériaux (LCVN)
%+ Laboratoire de Physico-Chimie des Matériaux Luminescents (LPCML)
%+ Ingénierie des Matériaux Polymères - Laboratoire des Matériaux Polymères et des Biomatériaux (IMP-LMPB)
%+ Groupe d'étude des semiconducteurs (GES)
%+ Draka Comtech
%+ Matériaux, Rayonnements, Structure (NEEL - MRS)
%+ European Synchrotron Radiation Facility (ESRF)
%+ Science et Ingénierie des Matériaux et Procédés (SIMaP)
%A Le Parc, Rozenn
%A Champagnon, Bernard
%A Levelut, Claire
%A Martinez, Valérie
%A David, Laurent
%A Faivre, Annelise
%A Flammer, Ivo
%A Hazemann, Jean-Louis
%A Simon, J.P.
%< avec comité de lecture
%@ 0021-8979
%J Journal of Applied Physics
%I American Institute of Physics
%V 103
%N 9
%P 094917
%8 2008
%D 2008
%R 10.1063/1.2917384
%Z Chemical Sciences/PolymersJournal articles
%X Density and concentration fluctuations have been investigated in a 3 mol % GeO2 doped silica glass as a function of the fictive temperature (the temperature at which the structure of the supercooled liquid has been frozen-in to form the glass) by small angle x-ray scattering measurements. The fluctuations increase in a way is quite similar to that observed for pure silica glass as a result of density fluctuation fictive temperature dependence. Fluctuations have also been studied in glasses containing different amounts of GeO2 up to 21 mol % GeO2. The fluctuations are shown to increase very strongly with germanium amount as a result of strong concentration fluctuation increase. This observation is in agreement with already observed excess losses in light scattering measurements.
%G English
%L hal-00385046
%U https://hal.science/hal-00385046
%~ UNIV-ST-ETIENNE
%~ UGA
%~ CNRS
%~ UNIV-GRENOBLE1
%~ UNIV-LYON1
%~ UNIV-MONTP2
%~ INSA-LYON
%~ INPG
%~ NEEL
%~ SIMAP
%~ LCVN
%~ GES
%~ IMP
%~ NEEL-MRS
%~ UNIV-MONTPELLIER
%~ INSA-GROUPE
%~ UDL
%~ UNIV-LYON
%~ UM1-UM2
%~ TEST2-HALCNRS