Journal of alloys and compounds, 2011-01, Vol.509 (3), p.831-836
2011
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Details
- Autor(en) / Beteiligte
- Titel
- Structural characterizations of As–Se–Te glasses
- Ist Teil von
- Journal of alloys and compounds, 2011-01, Vol.509 (3), p.831-836
- Ort / Verlag
- Kidlington: Elsevier B.V
- Erscheinungsjahr
- 2011
- Quelle
- Alma/SFX Local Collection
- Beschreibungen/Notizen
- ▶ First-neighbor Te–Te bonds are unlikely. ▶ Te is homogeneously distributed in the glassy network. ▶ The formation of mixed structural units AsSe 3− x Te x is confirmed. The atomic structure of chalcogenide glasses As 3Se 7− x Te x (0 ≤ x ≤ 3) and As 2Se 3− x Te x (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 As 3Se 7− x Te x or As 2Se 3− x Te x induces breaking of Se–Se bonds and the formation of AsSe 3− x Te x 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.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 0925-8388eISSN: 1873-4669DOI: 10.1016/j.jallcom.2010.09.104Titel-ID: cdi_hal_primary_oai_HAL_hal_00719554v1
- Format
- –
- Schlagworte
- Alloys, Atomic structure, Chalcogenide glass, Chalcogenides, Chemical Sciences, Condensed matter: electronic structure, electrical, magnetic, and optical properties, Condensed matter: structure, mechanical and thermal properties, Cross-disciplinary physics: materials science, rheology, Disordered solids, Exact sciences and technology, Glass, Glasses, Glasses (including metallic glasses), Infrared, Magnetic resonances and relaxations in condensed matter, mössbauer effect, Material chemistry, Materials science, NMR, Nuclear magnetic resonance and relaxation, Physics, Raman, Short range order, Specific materials, Structure, Structure of solids and liquids, crystallography, Tellurium, WAXS, Wide angle X ray scattering, X-ray diffraction and scattering, X-ray scattering (including small-angle scattering)