2014 On a mesuré la chaleur spécifique entre 0,1 et 1 ou 2 K des verres B2O3 et SiO2 soumis à des traitements thermiques de stabilisation au voisinage de Tg. Bien que des variations permanentes de densité jusqu'à 2 % aient été obtenues dans le cas de B2O3, cela ne produit que de faibles modifications de la chaleur spécifique liée aux systèmes à deux niveaux.Abstract. 2014 Specific heat measurements have been performed between 0.1 and 1 or 2 K on B2O3 and SiO2 glasses, which were stabilized near Tg by thermal treatments. Although permanent variations of the density up to two per-cent were obtained for B2O3, this induced only a slight modification of the specific heat related to the twolevel systems.
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