Judd-Ofelt analysis and crystal field calculations of Er3+ ions in new oxyfluorogermanotellurite glasses and glass-ceramics
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
hal.structure.identifier | Laboratoire d'Electronique Quantique | |
dc.contributor.author | ZANANE, Hayat | |
hal.structure.identifier | Science et Ingénierie des Matériaux et Procédés [SIMaP] | |
dc.contributor.author | VELÁZQUEZ, Matias | |
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | DENUX, Dominique | |
hal.structure.identifier | IRCER - Axe 3 : organisation structurale multiéchelle des matériaux [IRCER-AXE3] | |
dc.contributor.author | DUCLÈRE, Jean-René | |
hal.structure.identifier | Institut de Recherche sur les CERamiques [IRCER] | |
dc.contributor.author | CORNETTE, Julie | |
hal.structure.identifier | Laboratoire d'Electronique Quantique | |
dc.contributor.author | KERMAOUI, Aïcha | |
hal.structure.identifier | Laboratoire d'Electronique Quantique | |
dc.contributor.author | KELLOU, Hamid | |
hal.structure.identifier | Plateforme Aquitaine de Caractérisation des Matériaux [PLACAMAT] | |
dc.contributor.author | LAHAYE, Michel | |
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | BUFFIERE, Sonia | |
dc.date.issued | 2020-02 | |
dc.identifier.issn | 0925-3467 | |
dc.description.abstractEn | New 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.iso | en | |
dc.publisher | Elsevier | |
dc.subject.en | Glass materials | |
dc.subject.en | Er3+ ion spectroscopy | |
dc.subject.en | Rare-earth materials | |
dc.subject.en | Optical glass-ceramics | |
dc.title.en | Judd-Ofelt analysis and crystal field calculations of Er3+ ions in new oxyfluorogermanotellurite glasses and glass-ceramics | |
dc.type | Article de revue | |
dc.identifier.doi | 10.1016/j.optmat.2019.109640 | |
dc.subject.hal | Chimie/Matériaux | |
bordeaux.journal | Optical Materials | |
bordeaux.page | 109640 (8 p.) | |
bordeaux.volume | 100 | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-02429359 | |
hal.version | 1 | |
hal.popular | non | |
hal.audience | Internationale | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-02429359v1 | |
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