Ce3+ doped Lu3Al5O12 ceramics prepared by spark plasma sintering technology using micrometre powders: Microstructure, luminescence, and scintillation properties. Issue 14 (November 2022)

• Record Type: Journal Article
• Authors: Shi, Yun; Shichalin, Oleg; Xiong, Yifei; Kosyanov, Denis; Wu, Tong; Zhang, Qian; Wang, Ling; Zhou, Zhenzhen; Wang, Hui; Fang, Jinghong; He, Huan; Ni, Jinqi; Wang, Chaoyue; Liu, Qian; Yu, Jianding; Cui, Sheng; Wang, Haibo; Belov, Anton; Papynov, Eugeniy
• Is Part Of: Journal of the European Ceramic Society. Volume 42:Issue 14(2022)
• Page Start: 6663
• Page End: 6670
• Publication Date: 2022-11
• Subjects: Ceramic scintillator -- Ce:LuAG -- Spark plasma sintering (SPS) technology -- Grain size -- Light yield; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2022.07.014
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: Ce 3+ doped Lu3 Al5 O12 (Ce:LuAG) ceramics were fabricated by the solid-state reaction method through spark plasma sintering (SPS) from 1350 °C to 1700 °C for 5 min at a pressure of 50 MPa using micro powders. The average grain size of the SPSed ceramics gradually grew from 0.42 µm (1400 °C) to 1.55 µm (1700 °C), which is nearly one order of magnitude lower than that of vacuum sintered (VSed) Ce:LuAG ceramics (~24.6 µm). Characteristic Ce 3+ emission peaking at around 510 nm appeared and 92% photoluminescence intensity of room temperature can be reserved at 200 °C revealing excellent thermal stability. The maximum radioluminescence intensity reached around 3 times of VSed Ce:LuAG ceramics and 7.8 times of BGO crystals. The maximum scintillation light yield under γ-ray ( 137 Cs) excitation reached 9634 pho/MeV @ 2 μs. It is concluded that SPS technology is a feasible way to develop Ce:LuAG ceramics and further optical enhancement can be expected. Graphical Abstract: Experimental scheme. ga1