Szczegóły publikacji
Opis bibliograficzny
Studies of the spectroscopic properties of lead-gallium oxyfluoride (LGOF) glasses and glass-ceramics activated by $Pr^{3+}$ ions / Czeslaw Koepke, Marcin ŚRODA, Agnieszka Marczewska, Krzysztof Wisniewski, Paweł Pichniarczyk // Journal of Luminescence ; ISSN 0022-2313. — 2016 — vol. 179, s. 139–145. — Bibliogr. s. 144–145, Abstr. — Publikacja dostępna online od: 2016-06-23
Autorzy (5)
- Koepke Czesław
- AGHŚroda Marcin
- Marczewska Agnieszka
- Wisniewski Krzysztof
- Pichniarczyk Paweł
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 103468 |
|---|---|
| Data dodania do BaDAP | 2017-01-23 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.jlumin.2016.06.037 |
| Rok publikacji | 2016 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Luminescence |
Abstract
Lead-gallium glasses, due to the absence of typical glass-forming components, are characterized by an increased tendency to crystallization. Despite this, they are interesting materials due to a shift of IR absorption edge up to 6 and 7 mu m. The paper studies thermal stability, the UV-vis and IR transmission and luminescence spectroscopy of the lead-gallium glass. The base lead-gallium glass 0.65PbO center dot 0.20Ga(2)O(3)center dot 0.15SiO(2) was modified by the addition of 2 mol% BaF2 and 1 mol% Pr6O11. DTA/DSC data showed that the glasses are characterized by the multi-stage crystallization. Unusual luminescence excitation spectra confronted with emission spectra, measured for glass (as made) and glass ceramic (annealed) phase, have been tentatively interpreted by means of single configuration coordinate diagrams. It seems that in both phases the praseodymium ions occur in two sites: lower- and higher-field environment. We propose the fluorine-affected sites as the lower field sites and purely oxide sites as the higher field sites. It seems likely that O-Pr-O sites can be treated as the higher filed sites whereas the fluorine affected sites, i.e. F-Pr-F and/or O-Pr-F sites, as the lower field sites. (C) 2016 Elsevier B.V. All rights reserved.
