Photochemical synthesis and characterization of multi-component (Gd, Lu).sub.3./sub.(Ga,Al).sub.5./sub.O.sub.12./sub.: Ce garnet powders

0507907 - FZÚ 2020 RIV GB eng J - Journal Article
Bárta, Jan - Müllerová, E. - Kuzár, M. - Procházková, Lenka - Kučerková, Romana - Jakubec, Ivo - Čuba, V.
Photochemical synthesis and characterization of multi-component (Gd, Lu)₃(Ga,Al)₅O₁₂: Ce garnet powders.
Radiation Measurements. Roč. 124, May (2019), s. 98-102. ISSN 1350-4487. E-ISSN 1879-0925
R&D Projects: GA ČR GA17-06479S
Institutional support: RVO:68378271 ; RVO:61388980
Keywords : garnet * synthesis * nanomaterial * X-ray diffraction * radioluminescence
OECD category: Inorganic and nuclear chemistry; Inorganic and nuclear chemistry (UACH-T)
Impact factor: 1.512, year: 2019
Method of publishing: Limited access
https://doi.org/10.1016/j.radmeas.2019.03.012

Photochemical synthesis was used for the formation of solid precursors for multi-component Ce-doped (Gd1-xLux)3(Ga1-yAly)5O12. Elemental composition of the solid precursors was evaluated by X-ray fluorescence spectroscopy and the samples were then heated in air to obtain garnet powders. The calcination temperature was correlated with the composition of the powder. The X-ray diffraction revealed that for high Gd content at lower temperatures, impurities such as Gd3(GaO4)O2 were present along with the garnet phase, increased calcination temperature was required for a pure garnet phase. The highly luminescent powders exhibited typical Ce3+ 5d-4f emission in visible range when excited by X-rays, with shifts in emission maximum caused by the changes in sample composition.

Permanent Link: http://hdl.handle.net/11104/0298869