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Structure and properties of gallium-rich sodium germano-gallate glasses

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierCentre d'Optique, Photonique et Laser [COPL]
dc.contributor.authorSKOPAK, Téa
hal.structure.identifierDepartment of Chemistry
dc.contributor.authorKROEKER, Scott
hal.structure.identifierDepartment of Chemistry
dc.contributor.authorLEVIN, Kirill
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorDUSSAUZE, Marc
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorMÉREAU, Raphaël
hal.structure.identifierCentre d'Optique, Photonique et Laser [COPL]
hal.structure.identifierUniversité Laval [Québec] [ULaval]
dc.contributor.authorLEDEMI, Yannick
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCARDINAL, Thierry
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorFARGIN, Evelyne
hal.structure.identifierUniversité Laval [Québec] [ULaval]
hal.structure.identifierCentre d'Optique, Photonique et Laser [COPL]
dc.contributor.authorMESSADDEQ, Younès
dc.date.issued2019
dc.identifier.issn1932-7447
dc.description.abstractEnGlass compositions in the gallium-rich region of the ternary GaO3/2–GeO2–NaO1/2 vitreous system are studied as a function of the Na/Ga cationic ratio (ranging from 1.30 to 1.61) for a fixed GeO2 content. Glass structures are investigated by 71Ga magic angle spinning nuclear magnetic resonance, infrared, and Raman spectroscopies, and the thermal, optical, and physical properties are characterized. Vibrational spectra are interpreted with the help of density functional theory calculations. Gallium oxide generally enters the germania network in fourfold coordination, however, for a Na/Ga ratio below unity, gallium cations tend to charge balance with the formation of five- or six-fold coordination units. When the amount of sodium is greater than gallium, nonbridging oxygens are formed preferably on germanate tetrahedral units. These structural descriptions are used to understand the evolution of glass properties such as glass transition temperature, density, and refractive index.
dc.description.sponsorshipInitiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003
dc.description.sponsorshipImPRession laser de fibres exOtiques Multi-MaTEriaux
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.subject.en71Ga NMR spectroscopy
dc.subject.envibrational spectroscopy
dc.subject.eninfrared
dc.subject.engermano-gallate glasses
dc.subject.en71 Ga NMR spectroscopy
dc.subject.englass structure
dc.title.enStructure and properties of gallium-rich sodium germano-gallate glasses
dc.typeArticle de revue
dc.identifier.doi10.1021/acs.jpcc.8b08632
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Physical Chemistry C
bordeaux.page1370-1378
bordeaux.volume123
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-02048674
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02048674v1
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