The structure of As3Se5Te2 infrared optical glass

JOURNAL OF ALLOYS AND COMPOUNDS

卷:488

Article

Jovari, P.¹  Bureau, B.²  Kaban, I.³  Nazabal, V.²  Beuneu, B.⁴  Ruett, U.⁵ 

[1] Res Inst Solid State Phys & Opt, H-1525 Budapest, Hungary

[2] Univ Rennes 1, Equipe Verres & Ceram, Lab Sci Chim Rennes, UMR 6226,CNRS, F-35042 Rennes, France

[3] Tech Univ Chemnitz, Inst Phys, D-09107 Chemnitz, Germany

[4] CEA Saclay, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France

[5] Deutsch Elekt Synchroton DESY, Hamburger Synchrontronstschlungslabor HASYLAB, D-22603 Hamburg, Germany

关键词: Amorphous materials;    Atomic scale structure;    Neutron diffraction;    X-ray diffraction;    EXAFS;   

DOI  :  10.1016/j.jallcom.2009.08.154

来源: Elsevier

【 摘 要 】

The structure of As3Se5Te2 infrared optical glass was investigated by X-ray and neutron diffraction as well as extended X-ray absorption fine structure measurements at the As-, Se- and Te K-edges. The five datasets were modelled simultaneously by the reverse Monte Carlo simulation technique. Experimental data could be fitted satisfactorily by allowing As-Se. As-Te and Se-Te bonds only. It was revealed that the affinity of As is much higher to Se than to Te. The nearest As-Se distance is similar to that found in other vitreous As-Se based alloys, while the As-Te bond length is 0.02-0.04 angstrom shorter in As3Se5Te2 than in binary As-Te glasses. (C) 2009 Elsevier B.V. All rights reserved.

【 授权许可】

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