Thermally stimulated luminescence properties of Dy-doped MgAl2O4 single crystals

被引：12
|
作者：
Takebuchi, Yuma [1 ]
Fukushima, Hiroyuki [1 ]
Kato, Takumi [1 ]
Nakauchi, Daisuke [1 ]
Kawaguchi, Noriaki [1 ]
Yanagida, Takayuki [1 ]
机构：
[1] Nara Inst Sci & Technol NAIST, Div Mat Sci, Ikoma, Nara 6300192, Japan
来源：
OPTIK | 2021年 / 231卷
关键词：
Ionizing radiation; Single crystal; MgAl2O4; Dosimeter;
D O I：
10.1016/j.ijleo.2021.166498
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this paper, we have prepared Dy-doped MgAl2O4 single crystals by the Floating Zone (FZ) method and investigated photoluminescence (PL), scintillation, and thermally stimulated luminescence (TSL) properties. In PL and scintillation, origins of luminescence at around 480, 580, and 660 nm of synthesized crystals were assigned to the 4f-4f transitions of Dy3+. In TSL, three glow peaks at around 50, 220, and 350 degrees C were observed, and these peaks were attributed to cation antisites and V center. The 0.1 % Dy-doped MgAl2O4 single crystal showed the highest intensity in TSL glow curves among the prepared crystals and higher sensitivity than those in ceramic-form MgAl2O4.
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页数：8
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