dc.contributor | Université Laval | |
dc.contributor | Universidade Federal de Sergipe (UFS) | |
dc.contributor | Universidade Estadual Paulista (Unesp) | |
dc.date.accessioned | 2014-05-27T11:28:36Z | |
dc.date.accessioned | 2022-10-05T18:45:05Z | |
dc.date.available | 2014-05-27T11:28:36Z | |
dc.date.available | 2022-10-05T18:45:05Z | |
dc.date.created | 2014-05-27T11:28:36Z | |
dc.date.issued | 2013-03-01 | |
dc.identifier | Journal of the American Ceramic Society, v. 96, n. 3, p. 825-832, 2013. | |
dc.identifier | 0002-7820 | |
dc.identifier | 1551-2916 | |
dc.identifier | http://hdl.handle.net/11449/74727 | |
dc.identifier | 10.1111/jace.12109 | |
dc.identifier | WOS:000316572000026 | |
dc.identifier | 2-s2.0-84875249168 | |
dc.identifier | 2998503841917815 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/3923678 | |
dc.description.abstract | Erbium Er3+ and ytterbium Yb3+ codoped fluoro-phosphate glasses belonging to the system NaPO3-YF 3-BaF2-CaF2 have been prepared by the classical melt-quenching technique. Glasses containing up to 10 wt% of erbium and ytterbium fluorides have been obtained and characterized using differential scanning calorimetry (DSC) and UV-visible and near-infrared spectroscopy. Transparent and homogeneous glass-ceramics have been then reproducibly synthetized by appropriate heat treatment above glass transition temperature of a selected parent glass. Structural investigations of the crystallization performed through X-ray diffractometry (XRD) and scanning electron microscopy (SEM) have evidenced the formation of fluorite-type cubic crystals based during the devitrification process. Finally, infrared to visible up-conversion emission upon excitation at 975 nm has been studied on the Er3+ and Yb 3+ codoped glass-ceramics as a function of thermal treatment time. A large enhancement of intensity of the up-conversion emissions-about 150 times- has been observed in the glass-ceramics if compared to the parent glass one, suggesting an incorporation of the rare-earth ions (REI) into the crystalline phase. © 2012 The American Ceramic Society. | |
dc.language | eng | |
dc.relation | Journal of the American Ceramic Society | |
dc.relation | 2.956 | |
dc.relation | 0,950 | |
dc.rights | Acesso restrito | |
dc.source | Scopus | |
dc.subject | Crystalline phase | |
dc.subject | Devitrification process | |
dc.subject | Infrared-to-visible | |
dc.subject | Melt quenching techniques | |
dc.subject | Rare earth ions | |
dc.subject | Structural investigation | |
dc.subject | Up-conversion emission | |
dc.subject | Ytterbium fluorides | |
dc.subject | Differential scanning calorimetry | |
dc.subject | Glass ceramics | |
dc.subject | Heat treatment | |
dc.subject | Scanning electron microscopy | |
dc.subject | X ray diffraction analysis | |
dc.subject | Ytterbium | |
dc.subject | Erbium | |
dc.title | Infrared to visible up-conversion emission in Er3+/Yb 3+ codoped fluoro-phosphate glass-ceramics | |
dc.type | Artigo | |