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Study of the Ge20Te80-xSex glassy structures by combining solid state NMR, vibrational spectroscopies and DFT modelling

Abstract : The glassy ternary system Ge-Te-Se is currently receiving an increased attention due to its extended range of transmission in the infrared opening the way to various potential applications in photonics. In this study, a multi-techniques approach combining solid-state NMR, Raman and infrared spectroscopies and DFT calculations provides insight into the organization of the GeSe4-GeTe4 glassy network and allows to clarify a whole structural description of the glassy system. A particular attention is devoted to the presence of mixed GeTe8-xSex structural units and to the type of interconnections forming the glass networks. Such experimental/theoretical approach is provided both for the selenium and the tellurium rich part of the glassy system.
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https://hal.archives-ouvertes.fr/hal-03196087
Contributor : Laurent Jonchère Connect in order to contact the contributor
Submitted on : Friday, April 16, 2021 - 4:06:28 PM
Last modification on : Tuesday, October 19, 2021 - 10:58:04 AM
Long-term archiving on: : Saturday, July 17, 2021 - 7:01:43 PM

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C. Gonçalves, R. Mereau, Virginie Nazabal, Catherine Boussard-Plédel, Claire Roiland, et al.. Study of the Ge20Te80-xSex glassy structures by combining solid state NMR, vibrational spectroscopies and DFT modelling. Journal of Solid State Chemistry, Elsevier, 2021, 297, pp.122062. ⟨10.1016/j.jssc.2021.122062⟩. ⟨hal-03196087⟩

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