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Judd-Ofelt analysis and crystal field calculations of Er3+ ions in new oxyfluorogermanotellurite glasses and glass-ceramics

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierLaboratoire d'Electronique Quantique
dc.contributor.authorZANANE, Hayat
hal.structure.identifierScience et Ingénierie des Matériaux et Procédés [SIMaP]
dc.contributor.authorVELÁZQUEZ, Matias
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDENUX, Dominique
hal.structure.identifierIRCER - Axe 3 : organisation structurale multiéchelle des matériaux [IRCER-AXE3]
dc.contributor.authorDUCLÈRE, Jean-René
hal.structure.identifierInstitut de Recherche sur les CERamiques [IRCER]
dc.contributor.authorCORNETTE, Julie
hal.structure.identifierLaboratoire d'Electronique Quantique
dc.contributor.authorKERMAOUI, Aïcha
hal.structure.identifierLaboratoire d'Electronique Quantique
dc.contributor.authorKELLOU, Hamid
hal.structure.identifierPlateforme Aquitaine de Caractérisation des Matériaux [PLACAMAT]
dc.contributor.authorLAHAYE, Michel
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBUFFIERE, Sonia
dc.date.issued2020-02
dc.identifier.issn0925-3467
dc.description.abstractEnNew 30 GeO2-30 TeO2-15 ZnO-10 Na2CO3-10 CaF2-3 La2O3-x ErF3 (x = 2, 4) glasses have been synthesized and submitted to varied heat treatments to provoke nanocrystallization in their matrix. The Er3+-doped materials containing typically 50 Å-sized nanocrystallites have been characterized by DSC, ultrapicnometry, XRD, HRTEM, EDS, SAED, optical spectroscopy and VSM techniques. A Judd-Ofelt analysis could be performed from the absorption spectra and led to refined intensity parameters. The local structural changes around Er3+ cations were mostly evidenced by important modifications of the hypersensitive optical absorption bands (4I15/2 → 2H11/2, 4I15/2 → 4G11/2) and lesser modifications of the emission cross sections and experimental lifetimes. Besides, cycling around the crystallization temperature with a VSM showed some kind of “crossover” between the Curie-Weiss behavior of the Er3+ cations dissolved in the glass and those dissolved in the nanocrystallites, with a striking change of magnetic interactions sign from anti- to ferromagnetic. The crystal field Hamiltonian could be refined in C2 symmetry, thanks to the emission and excitation spectra recorded at 80 K, and the crystal field strength calculated.
dc.language.isoen
dc.publisherElsevier
dc.subject.enGlass materials
dc.subject.enEr3+ ion spectroscopy
dc.subject.enRare-earth materials
dc.subject.enOptical glass-ceramics
dc.title.enJudd-Ofelt analysis and crystal field calculations of Er3+ ions in new oxyfluorogermanotellurite glasses and glass-ceramics
dc.typeArticle de revue
dc.identifier.doi10.1016/j.optmat.2019.109640
dc.subject.halChimie/Matériaux
bordeaux.journalOptical Materials
bordeaux.page109640 (8 p.)
bordeaux.volume100
bordeaux.peerReviewedoui
hal.identifierhal-02429359
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02429359v1
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