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- W2146154120 abstract "XAFS measurements (LURE and NSLS) of ${mathrm{Se}}_{1ensuremath{-}x}{mathrm{Te}}_{x}$ glasses have been carried out on both the Se and Te $K$ edges at low and room temperatures. Using a multishell best-fit analysis procedure, we have reconstructed the Se and Te local environment: first-shell intrachain nearest neighbors $(mathrm{Se}ensuremath{-}{mathrm{Se}}_{1}, mathrm{Se}ensuremath{-}{mathrm{Te}}_{1}, mathrm{Te}ensuremath{-}{mathrm{Se}}_{1},$ and $mathrm{Te}ensuremath{-}{mathrm{Te}}_{1}).$ We conclude that the intrachain chemical order (preferential of Se-Te pairs) increases with Te content in the glasses. On the other hand, we suggest a random distribution of Se and Te atoms between the chains. The thermal disorder dominates for the first-shell pairs $mathrm{Se}ensuremath{-}{mathrm{Se}}_{1}, mathrm{Se}ensuremath{-}{mathrm{Te}}_{1} (mathrm{Te}ensuremath{-}{mathrm{Se}}_{1}),$ and $mathrm{Te}ensuremath{-}{mathrm{Te}}_{1}$ pairs. The obtained results provide insight on intrachain structure as well as on the structural and thermal disorder of mixed ${mathrm{Se}}_{1ensuremath{-}x}{mathrm{Te}}_{x}$ glasses." @default.
- W2146154120 created "2016-06-24" @default.
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- W2146154120 date "1998-09-01" @default.
- W2146154120 modified "2023-10-16" @default.
- W2146154120 title "XAFS study of interchain and intrachain order in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Se</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mi>−</mml:mi><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Te</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>glasses: Nearest neighbors" @default.
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- W2146154120 doi "https://doi.org/10.1103/physrevb.58.6104" @default.
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