Gd-incorporation and luminescence properties in sol-gel silica glasses (Articolo in rivista)

Type
Label
  • Gd-incorporation and luminescence properties in sol-gel silica glasses (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.jnoncrysol.2008.05.027 (literal)
Alternative label
  • Di Martino, D; Chiodini, N; Fasoli, M; Moretti, F; Vedda, A; Baraldi, A; Buffagni, E; Capelletti, R; Mazzera, M; Nikl, M; Angella, G; Azzoni, CB (2008)
    Gd-incorporation and luminescence properties in sol-gel silica glasses
    in Journal of non-crystalline solids
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Di Martino, D; Chiodini, N; Fasoli, M; Moretti, F; Vedda, A; Baraldi, A; Buffagni, E; Capelletti, R; Mazzera, M; Nikl, M; Angella, G; Azzoni, CB (literal)
Pagina inizio
  • 3817 (literal)
Pagina fine
  • 3823 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 354 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • \"[Di Martino, Daniela; Chiodini, Norberto; Fasoli, Mauro; Moretti, Federico; Vedda, Anna; Nikl, Martin] Univ Milan, Dipartimento Sci Mat, I-20125 Milan, Italy; [Di Martino, Daniela; Chiodini, Norberto; Fasoli, Mauro; Moretti, Federico; Vedda, Anna; Nikl, Martin] Univ Milan, CNISM, I-20125 Milan, Italy; [Baraldi, Andrea; Buffagni, Elisa; Capelletti, Rosanna; Mazzera, Margherita] Univ Parma, Dipartimento Fis, I-43100 Parma, Italy; [Baraldi, Andrea; Buffagni, Elisa; Capelletti, Rosanna; Mazzera, Margherita] Univ Parma, CNISM, I-43100 Parma, Italy; [Nikl, Martin] Inst Phys AS CR, Prague 16253, Czech Republic; [Angella, Giuliano] INFM, CNR, UdR Milano Bicocca, Ist IENI,Sez Milano Bicocca, Milan, Italy; [Azzoni, Carlo B.] Univ Pavia, Dipartimento Fis A Volta, I-27100 Pavia, Italy; [Azzoni, Carlo B.] CNISM, I-27100 Pavia, Italy (literal)
Titolo
  • Gd-incorporation and luminescence properties in sol-gel silica glasses (literal)
Abstract
  • A thorough study was performed on Gd-doped sol-gel silica glasses, in the concentration range 0-8 mol% Gd. The analyses were carried out as a function of Gd content, before and after a post-densification thermal treatment. Different results concerning optical, vibrational, magnetic, and structural features were gathered in correlated experiments. The presence of Gd-rich nanoclusters was revealed. The size of nanoclusters increases by increasing the dopant concentration and by performing a rapid thermal treatment (RTT) at 1800 degrees C in air, which causes also a remarkable intensity increase of the P-6(7/2) -> S-8(7/2) radio-luminescence transition of Gd3+. Nanoclusters are amorphous, possibly close to a Gd2SiO5 stoichiometry as suggested by fast Fourier transform infrared spectroscopy (FTIR). FTIR studies revealed also the presence of Gd-dimers interacting with OH- groups. Moreover, the presence of isolated Gd 31 ions was detected by electron paramagnetic resonance investigations. Based on the results obtained with different techniques, the Gd-incorporation in silica glass host and the resulting optical properties are discussed. (c) 2008 Elsevier B.V. All rights reserved. (literal)
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