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Author Itoh, Keiji
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ♦ GLASS ♦ MONTE CARLO METHOD ♦ NEUTRON DIFFRACTION ♦ SELENIUM COMPOUNDS ♦ SIMULATION ♦ TELLURIUM COMPOUNDS ♦ X-RAY DIFFRACTION
Abstract Pulsed neutron diffraction and synchrotron X-ray diffraction measurements were performed on Se{sub 100-x}Te{sub x} bulk glasses with x=10, 20, 30 and 40. The coordination numbers obtained from the diffraction results demonstrate that Se and Te atoms are twofold coordinated and the glass structure is formed by the chain network. The three-dimensional structure model for Se{sub 60}Te{sub 40} glass obtained by using reverse Monte Carlo modelling shows that the alternating arrangements of Se and Te atoms compose the major part of the chain clusters but several other fragments such as Se{sub n} chains and Te-Te dimers are also present in large numbers. The chain clusters have geometrically disordered forms and the interchain atomic order is different from those in the crystal structures of trigonal Se and trigonal Te. - Graphical abstract: Coordination environment in Se{sub 60}Te{sub 40} glass.
ISSN 00224596
Educational Use Research
Learning Resource Type Article
Publisher Date 2017-02-15
Publisher Place United States
Journal Journal of Solid State Chemistry
Volume Number 246


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