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Structural characterizations of As-Se-Te glasses

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Structural characterizations of As-Se-Te glasses
Lecante, P.
Delaizir, G.
Καμίτσος, Ευστράτιος Ι.
Bureau, B.
Dussauze, M.
Jovari, P.
Nazabal, V.
Dolle, M.
Rozier, P.
Άρθρο σε επιστημονικό περιοδικό
2011-01-21
The atomic structure of chalcogenide glasses As(3)Se(7-x)Te(x) (0 <= x <= 3) and As(2)Se(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). (77)Se 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(3)Se(7-x)Te(x) or As(2)Se(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.
Lausanne
Χημεία (Γενικά) (EL)
Επιστήμη (Γενικά) (EL)
Τεχνολογία (Γενικά) (EL)
Technology (General) (EN)
Science (General) (EN)
Chemistry (General) (EN)
Chalcogenide glass
NMR
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Raman
Structure
WAXS
Chemistry, Physical
English
Elsevier Science Sa
Journal of Alloys and Compounds (formerly Known as Journal of the Less Common Metals)
https://rightsstatements.org/page/InC/1.0/?language=en
© 2010 Elsevier B.V. All rights reserved.
© 2010 Elsevier B.V. All rights reserved. (EN)
National Hellenic Research Foundation (NHRF)
Helios - Repository of the National Hellenic Research Foundation (NHRF)



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