Structural characterizations of As-Se-Te glasses - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Journal of Alloys and Compounds Année : 2011

Structural characterizations of As-Se-Te glasses

Résumé

The atomic structure of chalcogenide glasses As3Se7−xTex (0 ≤ x ≤ 3) and As2Se3−xTex (0 ≤ x ≤ 2.5) has been investigated by different methods. Short-range order has been studied by Wide-Angle X-ray Scattering (WAXS). 77Se NMR as well as Raman and infrared measurements were also performed on the different compositions. We show that the progressive introduction of tellurium in As3Se7−xTex or As2Se3−xTex induces breaking of Se-Se bonds and the formation of AsSe3−xTex pyramidal units. Experimental data also reveal the absence of Te-Te bonds even in the tellurium richest composition which let suppose a homogeneous repartition of tellurium atoms in the glassy network.

Domaines

Matériaux

Dates et versions

hal-00719554 , version 1 (20-07-2012)

Identifiants

Citer

Gaëlle Delaizir, M. Dussauze, Virginie Nazabal, Pierre Lecante, Mickaël Dollé, et al.. Structural characterizations of As-Se-Te glasses. Journal of Alloys and Compounds, 2011, 509 (3), pp.831-836. ⟨10.1016/j.jallcom.2010.09.104⟩. ⟨hal-00719554⟩
81 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More