Fundamental studies of magneto-optical borogermanate glasses and derived optical fibers containing Tb3+

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversity of Brasília-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.contributorUniversité Laval-
Autor(es): dc.creatorFranco, Douglas F. [UNESP]-
Autor(es): dc.creatorFernandes, Roger G. [UNESP]-
Autor(es): dc.creatorFelix, Jorlandio F.-
Autor(es): dc.creatorMastelaro, Valmor R.-
Autor(es): dc.creatorEckert, Hellmut-
Autor(es): dc.creatorAfonso, Conrado R.M.-
Autor(es): dc.creatorMessaddeq, Younès [UNESP]-
Autor(es): dc.creatorMessaddeq, Sandra H.-
Autor(es): dc.creatorMorency, Steeve-
Autor(es): dc.creatorNalin, Marcelo [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:53:39Z-
Data de disponibilização: dc.date.available2022-02-22T00:53:39Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-03-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jmrt.2021.01.010-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/208521-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/208521-
Descrição: dc.descriptionNew magnetic glass compositions, based on system (100-x) (60GeO2 -25B2O3 -4Al2O3 -10Na2O-1PbO) - xTb4O7 were prepared by the melt-quenching technique. The materials were systematically characterized with respect to their structural (XRD, EXAFS, XANES and Raman), thermal (DSC), morphological, optical, magnetic and magneto-optical (MO) properties. Morphological and magnetic measurements show the homogeneous distribution of the Tb3+ ions as the magnetic susceptibility increases proportionally to the rare earth content. The optical window covers the range from 0.5 up to 1.6 μm, limited by absorption due to 4f8 -> 4f7 5 d 1and 4f8 -> 4f8 transitions of Tb3+. XANES and EXAFS measurements at the Ge-K edge show that the germanium atoms are always tetrahedrally coordinated, while results at the Tb-LIII edge shows terbium atoms to be eight-coordinated and exclusively present in the oxidation state 3+ independently of the glass composition. MO measurements show that the Verdet constant (VB) increases linearly with the Tb3+ concentration reaching the value of -83.9 rad T-1m-1 at 650 nm for glass containing 8 mol% of Tb4O7. Good thermal stability (ΔT = 200 °C) allowed obtaining an optical fiber of a glass containing 4 mol% of Tb4O7 featuring VB values of -37.9, -23.6 and -5.89 rad T-1 m-1, at 500, 650 and 1550 nm, respectively.-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University UNESP-
Descrição: dc.descriptionInstitute of Physics Applied Physics Center University of Brasília-
Descrição: dc.descriptionSão Carlos Institute of Physics São Paulo University USP-
Descrição: dc.descriptionDepartment of Materials Engineering (DEMa) Federal University of São Carlos UFSCar-
Descrição: dc.descriptionCentre d'Optique Photonique et Laser Université Laval-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University UNESP-
Formato: dc.format312-327-
Idioma: dc.languageen-
Relação: dc.relationJournal of Materials Research and Technology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectFaraday rotation-
Palavras-chave: dc.subjectMagneto-optical glasses-
Palavras-chave: dc.subjectOptical fibers-
Palavras-chave: dc.subjectVerdet constant-
Título: dc.titleFundamental studies of magneto-optical borogermanate glasses and derived optical fibers containing Tb3+-
Tipo de arquivo: dc.typelivro digital-
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