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Transparent Sol-Gel Oxyfluoride Glass-Ceramics with High Crystalline Fraction and Study of RE Incorporation.
Gorni, Giulio; Velázquez, Jose J; Mosa, Jadra; Mather, Glenn C; Serrano, Aida; Vila, María; Castro, Germán R; Bravo, David; Balda, Rolindes; Fernández, Joaquín; Durán, Alicia; Castro, Yolanda.
Afiliación
  • Gorni G; Instituto de Cerámica y Vidrio, CSIC, 28049 Madrid, Spain. ggorni@icv.csic.es.
  • Velázquez JJ; FunGlass-Centre for Functional and Surface Functionalized Glass, Alexander Dubcek University of Trencín, Trencín 91150, Slovakia. jose.velazquez@tnuni.sk.
  • Mosa J; Instituto de Cerámica y Vidrio, CSIC, 28049 Madrid, Spain. jmosa@icv.csic.es.
  • Mather GC; Instituto de Cerámica y Vidrio, CSIC, 28049 Madrid, Spain. mather@icv.csic.es.
  • Serrano A; Instituto de Cerámica y Vidrio, CSIC, 28049 Madrid, Spain. aida.serrano@icv.csic.es.
  • Vila M; SpLine, Spanish CRG Beamline-European Synchrotron Radiation Facility (ESRF), 38043 Grenoble, France. aida.serrano@icv.csic.es.
  • Castro GR; SpLine, Spanish CRG Beamline-European Synchrotron Radiation Facility (ESRF), 38043 Grenoble, France. maria.vila-santos@esrf.fr.
  • Bravo D; Instituto de Ciencia de Materiales de Madrid, CSIC, 28049 Madrid, Spain. maria.vila-santos@esrf.fr.
  • Balda R; SpLine, Spanish CRG Beamline-European Synchrotron Radiation Facility (ESRF), 38043 Grenoble, France. german.castro@esrf.fr.
  • Fernández J; Instituto de Ciencia de Materiales de Madrid, CSIC, 28049 Madrid, Spain. german.castro@esrf.fr.
  • Durán A; Departamento Física de Materiales, Facultad de Ciencias, Universidad Autónoma de Madrid (UAM), 28049 Madrid, Spain. david.bravo@uam.es.
  • Castro Y; Departamento Física Aplica I, Escuela Superior de Ingeniería, Universidad del País Vasco (UPV-EHU), 48013 Bilbao, Spain. rolindes.balda@ehu.eus.
Nanomaterials (Basel) ; 9(4)2019 Apr 03.
Article en En | MEDLINE | ID: mdl-30987125
Transparent oxyfluoride glass-ceramic films and self-supported layers with composition 80SiO2-20LaF3 doped with Er3+ have been successfully synthesized by sol-gel process for the first time. Crack-free films and self-supported layer with a maximum thickness up to 1.4 µm were obtained after heat treatment at the low temperature of 550 °C for 1 min, resulting in a LaF3 crystal fraction of 18 wt%, as confirmed by quantitative Rietveld refinement. This is the highest value reported up to now for transparent oxyfluoride glass-ceramics prepared by sol-gel. This work provides a new synthesis strategy and opens the way to a wide range of potential applications of oxyfluoride glass-ceramics. The characterization by a wide range of techniques revealed the homogeneous precipitation of LaF3 nanocrystals into the glass matrix. X-ray absorption spectroscopy and electron paramagnetic resonance confirmed that the Er3+ ions are preferentially embedded in the low phonon-energy LaF3 nanocrystals. Moreover, photoluminescence (PL) measurements confirmed the incorporation of dopants in the LaF3 nanocrystals. The effective concentration of rare-earth ions in the LaF3 nanocrystals is also estimated by X-ray absorption spectroscopy.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanomaterials (Basel) Año: 2019 Tipo del documento: Article País de afiliación: España Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanomaterials (Basel) Año: 2019 Tipo del documento: Article País de afiliación: España Pais de publicación: Suiza