Compositional regulation of multi-component GYGAG:Ce scintillation ceramics: Self-sintering-aid effect and afterglow suppression

0577155 - FZÚ 2024 RIV CN eng J - Článek v odborném periodiku
Zhu, D. - Wu, L. - Beitlerová, Alena - Kučerková, Romana - Chewpraditkul, W. - Nikl, Martin - Li, J.
Compositional regulation of multi-component GYGAG:Ce scintillation ceramics: Self-sintering-aid effect and afterglow suppression.
Journal of Advanced Ceramics. Roč. 12, č. 10 (2023), s. 1919-1929. ISSN 2226-4108. E-ISSN 2227-8508
Grant CEP: GA MŠMT(CZ) EF16_019/0000760; GA ČR(CZ) GA21-17731S
Grant ostatní: OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institucionální podpora: RVO:68378271
Klíčová slova: GYGAG:Ce ceramics * multi-component garnet * compositional regulation * afterglow
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 16.9, rok: 2022
Způsob publikování: Open access

(Gd,Y,Ce)3(YxGa1−x)2GaAl2O12 (GYGAG:Ce) scintillation ceramics with different Y excess, where x = 0.005−0.08, were fabricated by the solid-state reaction method. The effects of stoichiometry on the phase composition, optical quality, and microstructure of GYGAG:Ce ceramics were analyzed. GYGAG:Ce ceramics have a pure garnet phase and obtain good in-line transmittance when x < 0.04, while more Y excess leads to the creation of the secondary phase. The change of x value influences the sintering behavior of the GYGAG:Ce ceramics: The excess of Y works as the self-sintering aid and significantly reduces the sintering temperature of ceramics. When x = 0.01–0.04, the X-ray excited luminescence (XEL) spectra and light yields of GYGAG:Ce ceramics are similar. The fast scintillation decay time and afterglow intensity of GYGAG:Ce ceramics show a slight decrease with increasing x value. Finally, additional 50–500 ppm MgO and 100–500 ppm CaO were introduced to the GYGAG:Ce ceramic.

Trvalý link: https://hdl.handle.net/11104/0346387