Glass forming regions, structure and properties of lanthanum barium germanate and gallate glasses

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversité de Bordeaux-
Autor(es): dc.contributor1 Avenue de la Recherche Scientifique-
Autor(es): dc.contributor351 cours de la Libération-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorCalzavara, Florian-
Autor(es): dc.creatorAllix, Mathieu-
Autor(es): dc.creatorDussauze, Marc-
Autor(es): dc.creatorJubera, Véronique-
Autor(es): dc.creatorNalin, Marcelo [UNESP]-
Autor(es): dc.creatorCardinal, Thierry-
Autor(es): dc.creatorFargin, Evelyne-
Data de aceite: dc.date.accessioned2022-08-04T22:10:30Z-
Data de disponibilização: dc.date.available2022-08-04T22:10:30Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2021-10-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jnoncrysol.2021.121064-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/221992-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/221992-
Descrição: dc.descriptionGlass forming regions in the system GaO3/2 – GeO2 – LaO3/2 – BaO have been explored using aerodynamic levitation coupled to laser heating synthesis technique. Structure property relationships have been established between the thermal and optical properties of the resulting glass thanks to Raman and Infrared vibrational spectroscopies. The germano-gallate glass networks are mainly made of three-dimensional interconnected corner shared GeO4 and GaO4 tetrahedra forming Ge – O – Ge and Ga – O− – Ge bridges in which gallium tetrahedral GaO4 units are charged-compensated by barium and lanthanum cations. In GeO2-rich compositions, the excess of positive charges produces mainly non-bridging oxygens on germanate moieties, leading to a depolymerization of the glass network. In the case of gallium rich compositions, the infrared cut-off is red-shifted as compared to the germanate glasses, in accordance with the disappearance of germanium associated entities such as germanium and gallium bridges or germanium sites with non-bridging oxygen both vibrating at higher wavenumber.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionHorizon 2020 Framework Programme-
Descrição: dc.descriptionAgence Nationale de la Recherche-
Descrição: dc.descriptionInstitut de Chimie de la Matière Condensée de Bordeaux Université de Bordeaux, 87 Avenue du Dr Schweitzer-
Descrição: dc.descriptionConditions Extrêmes et Matériaux Haute Température et Irradiation UPR3079 Université d'Orléans 1 Avenue de la Recherche Scientifique-
Descrição: dc.descriptionInstitut des Sciences Moléculaires UMR 5255 Université́ de Bordeaux 351 cours de la Libération-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University-UNESP Rua Prof. Francisco Degni, 55, CEP 14800-060-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University-UNESP Rua Prof. Francisco Degni, 55, CEP 14800-060-
Descrição: dc.descriptionFAPESP: 2013/07793-6-
Descrição: dc.descriptionFAPESP: 2019/01223-0-
Descrição: dc.descriptionHorizon 2020 Framework Programme: 823941-
Descrição: dc.descriptionAgence Nationale de la Recherche: ANR-10-IDEX-03-02-
Descrição: dc.descriptionAgence Nationale de la Recherche: ANR-18-CE08-0004-02-
Idioma: dc.languageen-
Relação: dc.relationJournal of Non-Crystalline Solids-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAerodynamic levitation coupled to laser heating-
Palavras-chave: dc.subjectGermano-gallate glasses-
Palavras-chave: dc.subjectGlass structure-
Palavras-chave: dc.subjectHeavy-metal oxide glasses-
Palavras-chave: dc.subjectVibrational Infrared and Raman spectroscopies-
Título: dc.titleGlass forming regions, structure and properties of lanthanum barium germanate and gallate glasses-
Tipo de arquivo: dc.typelivro digital-
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