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Citation
Tags
HERO ID
8472293
Reference Type
Journal Article
Title
Ga for Al substitution effects on the garnet phase stability and luminescence properties of Gd3GaxAl5-xO12:Ce single crystals
Author(s)
Bartosiewicz, K; Babin, V; Kamada, K; Yoshikawa, A; Kurosawa, S; Beitlerova, A; Kucerkova, R; Nikl, M; Zorenko, Yu; ,
Year
2019
Is Peer Reviewed?
Yes
Journal
Journal of Luminescence
ISSN:
0022-2313
Publisher
ELSEVIER
Location
AMSTERDAM
Page Numbers
116724
DOI
10.1016/j.jlumin.2019.116724
Web of Science Id
WOS:000493395400026
URL
https://linkinghub.elsevier.com/retrieve/pii/S0022231319301310
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Abstract
This research deals with the luminescence and physical properties of Gd-3 (Ga,Al)(5)O-12:Ce single crystal set and it is a complementary study to analogous (Y,Gd)(3)Al5O12:Ce and (Gd,Lu)(3)Al5O12:Ce single crystal sets. Those three groups of materials show similar luminescence and physical properties. In this research, the influence of substitution Ga for Al in Gd-3(Ga,Al)(5)O-12:Ce single crystals on the luminescence and scintillation characteristics as well as thermodynamical stability of the garnet phase is studied, and it is compared to (Y,Gd)(3)Al5O12:Ce and (Gd,Lu)(3)Al5O12:Ce single crystal sets. The unbalanced substitution Ga for Al makes garnet phase thermodynamically unstable and leads to the formation of the multiphase system with luminescence centers in UV and visible spectral ranges. The wavelength-dispersive X-ray spectroscopy, X-ray powder diffraction analysis, photoluminescence and decay kinetic measurements reviled all phase types within multiphase crystals. Temperature dependent measurements were applied to determine the quenching mechanism for Ce3+ luminescence. The timing characteristics are studied as the function of Ga content.
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