Effect of Mg co-doping on scintillation properties of Ce:Gd3(Ga, Al)5O12 single crystals with various Ga/Al ratios

Masao Yoshino; Kei Kamada; Yasuhiro Shoji; Akihiro Yamaji; Shunsuke Kurosawa; Yuui Yokota; Yuji Ohashi; Akira Yoshikawa; Valery I. Chani

doi:10.1016/j.jcrysgro.2016.12.054

Effect of Mg co-doping on scintillation properties of Ce:Gd₃(Ga, Al)₅O₁₂ single crystals with various Ga/Al ratios

Masao Yoshino, Kei Kamada, Yasuhiro Shoji, Akihiro Yamaji, Shunsuke Kurosawa, Yuui Yokota, Yuji Ohashi, Akira Yoshikawa, Valery I. Chani

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

Mg co-doped Ce1%:Gd₃Ga_xAl_5−xO₁₂ (Ce:GAGG) crystals (x=2.4, 2.7, 3.0) were successfully grown by the Czochralski (Cz) method. Effect of Mg co-doping on the scintillation properties of Ce:GAGG was examined. This study covers measurements of solidification fraction and scintillation properties such as light yield, energy resolution and non-proportionality for each crystal. Pulse-height spectra of various gamma and X-ray sources with energies ranged from 30 keV to 662 keV were measured. Regardless of the presence/absence of Mg dopant, the non-proportionality curves with lower content of gallium in the crystal structure tend to improve. Mg co-doped Ce:GAGG samples did not show a significant difference as compared with non co-doped Ce:GAGG. Mg co-doped crystals with x=2.4 and 2.7 showed the promising scintillation properties of faster decay time and higher energy resolution than those with x=3.0.

Original language	English
Pages (from-to)	420-423
Number of pages	4
Journal	Journal of Crystal Growth
Volume	468
DOIs	https://doi.org/10.1016/j.jcrysgro.2016.12.054
Publication status	Published - 2017 Jun 15

Keywords

A2. Czochralski method
A2. Single crystal growth
B1. Gadolinium compounds
B1. Gallium compounds
B1. Oxides
B2. Scintillator materials

ASJC Scopus subject areas

Condensed Matter Physics
Inorganic Chemistry
Materials Chemistry

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10.1016/j.jcrysgro.2016.12.054

Cite this

@article{9eb86890a80847699e08e11b52dc2881,

title = "Effect of Mg co-doping on scintillation properties of Ce:Gd3(Ga, Al)5O12 single crystals with various Ga/Al ratios",

abstract = "Mg co-doped Ce1%:Gd3GaxAl5−xO12 (Ce:GAGG) crystals (x=2.4, 2.7, 3.0) were successfully grown by the Czochralski (Cz) method. Effect of Mg co-doping on the scintillation properties of Ce:GAGG was examined. This study covers measurements of solidification fraction and scintillation properties such as light yield, energy resolution and non-proportionality for each crystal. Pulse-height spectra of various gamma and X-ray sources with energies ranged from 30 keV to 662 keV were measured. Regardless of the presence/absence of Mg dopant, the non-proportionality curves with lower content of gallium in the crystal structure tend to improve. Mg co-doped Ce:GAGG samples did not show a significant difference as compared with non co-doped Ce:GAGG. Mg co-doped crystals with x=2.4 and 2.7 showed the promising scintillation properties of faster decay time and higher energy resolution than those with x=3.0.",

keywords = "A2. Czochralski method, A2. Single crystal growth, B1. Gadolinium compounds, B1. Gallium compounds, B1. Oxides, B2. Scintillator materials",

author = "Masao Yoshino and Kei Kamada and Yasuhiro Shoji and Akihiro Yamaji and Shunsuke Kurosawa and Yuui Yokota and Yuji Ohashi and Akira Yoshikawa and Chani, {Valery I.}",

note = "Publisher Copyright: {\textcopyright} 2016",

year = "2017",

month = jun,

day = "15",

doi = "10.1016/j.jcrysgro.2016.12.054",

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T1 - Effect of Mg co-doping on scintillation properties of Ce:Gd3(Ga, Al)5O12 single crystals with various Ga/Al ratios

AU - Yoshino, Masao

AU - Kamada, Kei

AU - Shoji, Yasuhiro

AU - Yamaji, Akihiro

AU - Kurosawa, Shunsuke

AU - Yokota, Yuui

AU - Ohashi, Yuji

AU - Yoshikawa, Akira

AU - Chani, Valery I.

PY - 2017/6/15

Y1 - 2017/6/15

N2 - Mg co-doped Ce1%:Gd3GaxAl5−xO12 (Ce:GAGG) crystals (x=2.4, 2.7, 3.0) were successfully grown by the Czochralski (Cz) method. Effect of Mg co-doping on the scintillation properties of Ce:GAGG was examined. This study covers measurements of solidification fraction and scintillation properties such as light yield, energy resolution and non-proportionality for each crystal. Pulse-height spectra of various gamma and X-ray sources with energies ranged from 30 keV to 662 keV were measured. Regardless of the presence/absence of Mg dopant, the non-proportionality curves with lower content of gallium in the crystal structure tend to improve. Mg co-doped Ce:GAGG samples did not show a significant difference as compared with non co-doped Ce:GAGG. Mg co-doped crystals with x=2.4 and 2.7 showed the promising scintillation properties of faster decay time and higher energy resolution than those with x=3.0.

AB - Mg co-doped Ce1%:Gd3GaxAl5−xO12 (Ce:GAGG) crystals (x=2.4, 2.7, 3.0) were successfully grown by the Czochralski (Cz) method. Effect of Mg co-doping on the scintillation properties of Ce:GAGG was examined. This study covers measurements of solidification fraction and scintillation properties such as light yield, energy resolution and non-proportionality for each crystal. Pulse-height spectra of various gamma and X-ray sources with energies ranged from 30 keV to 662 keV were measured. Regardless of the presence/absence of Mg dopant, the non-proportionality curves with lower content of gallium in the crystal structure tend to improve. Mg co-doped Ce:GAGG samples did not show a significant difference as compared with non co-doped Ce:GAGG. Mg co-doped crystals with x=2.4 and 2.7 showed the promising scintillation properties of faster decay time and higher energy resolution than those with x=3.0.

KW - A2. Czochralski method

KW - A2. Single crystal growth

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KW - B1. Oxides

KW - B2. Scintillator materials

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