TY - JOUR
T1 - Crystal structure of Ce-doped (La,Gd)2Si2O7 grown by the Czochralski process
AU - Murakami, Rikito
AU - Kurosawa, Shunsuke
AU - Yamane, Hisanori
AU - Horiai, Takahiko
AU - Shoji, Yasuhiro
AU - Yokota, Yuui
AU - Yamaji, Akihiro
AU - Ohashi, Yuji
AU - Kamada, Kei
AU - Yoshikawa, Akira
N1 - Funding Information:
This work was partially supported by (1) Japan Society for the Promotion of Science (JSPS), KAKENHI Grant Number 14462961, 15597934, 17H05190, 15619740 (Grant-in-Aid for Young Scientists(B), S. Kurosawa), (2) Bilateral AS CR-JSPS Joint Research Project, (3) Japan Science and Technology Agency (JST), Development of Systems and Technology for Advanced Measurement and Analysis (SENTAN), (4) JST, Adaptable & Seamless Technology Transfer Program through Target-driven R&D, (v) the Association for the Progress of New Chemical Technology, (5) The Murata Science Foundation, (6) Nippon Sheet Glass Foundation for Materials Science and Engineering, (7) Tonen General Sekiyu Foundation, (8) Yazaki Memorial Foundation for Science and Technology, (9) Tokin Science and Technology Promotion Foundation, (10) Intelligent cosmos research institute, (11) Frontier Research Institute for Interdisciplinary Sciences, Tohoku University (12) International Collaboration Center Institute for Materials Research (ICC-IMR), Tohoku University, (13) Leading Initiative for Excellent Young Researchers (LEADER) project, JSPS/MEXT, (14) Japan Agency for Medical Research and Development (AMED), Medical Research and Development Programs Focused on Technology Transfers: Development of Advanced Measurement and Analysis Systems (AMED-SENTAN), ID:171125, (15) the joint research project of the Institute of Laser Engineering, Osaka University and (16) Hosokawa Powder Technology Foundation, (17) Foundation for Promotion of Material Science and Technology of Japan. In addition, we would like to thank following persons for their support: Dr. Jan Pejchal of Institute of Physics of the Czech Academy of Sciences, Dr. Vladimir V. Kochurikhin of General Physics Institute, Mr. Yoshihiro Nakamura of Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University and Mr. Hiroshi Uemura, Ms. Keiko Toguchi, Ms. Megumi Sasaki, Ms. Yuka Takeda, and Ms. Kuniko Kawaguchi of IMR, Tohoku University.
Funding Information:
This work was partially supported by (1) Japan Society for the Promotion of Science (JSPS) , KAKENHI Grant Number 14462961 , 15597934 , 17H05190 , 15619740 (Grant-in-Aid for Young Scientists(B), S. Kurosawa), (2) Bilateral AS CR-JSPS Joint Research Project , (3) Japan Science and Technology Agency (JST) , Development of Systems and Technology for Advanced Measurement and Analysis (SENTAN) , (4) JST, Adaptable & Seamless Technology Transfer Program through Target-driven R&D, (v) the Association for the Progress of New Chemical Technology, (5) The Murata Science Foundation , (6) Nippon Sheet Glass Foundation for Materials Science and Engineering , (7) Tonen General Sekiyu Foundation , (8) Yazaki Memorial Foundation for Science and Technology , (9) Tokin Science and Technology Promotion Foundation , (10) Intelligent cosmos research institute , (11) Frontier Research Institute for Interdisciplinary Sciences, Tohoku University (12) International Collaboration Center Institute for Materials Research (ICC-IMR) , Tohoku University, (13) Leading Initiative for Excellent Young Researchers (LEADER) project, JSPS/MEXT , (14) Japan Agency for Medical Research and Development (AMED) , Medical Research and Development Programs Focused on Technology Transfers: Development of Advanced Measurement and Analysis Systems (AMED-SENTAN), ID:171125, (15) the joint research project of the Institute of Laser Engineering, Osaka University and (16) Hosokawa Powder Technology Foundation , (17) Foundation for Promotion of Material Science and Technology of Japan . In addition, we would like to thank following persons for their support: Dr. Jan Pejchal of Institute of Physics of the Czech Academy of Sciences, Dr. Vladimir V. Kochurikhin of General Physics Institute, Mr. Yoshihiro Nakamura of Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University and Mr. Hiroshi Uemura, Ms. Keiko Toguchi, Ms. Megumi Sasaki, Ms. Yuka Takeda, and Ms. Kuniko Kawaguchi of IMR, Tohoku University. Appendix A
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/6/5
Y1 - 2018/6/5
N2 - Single crystals of (La0.25Gd0.75)2Si2O7 and (La0.235Ce0.015Gd0.75)2Si2O7 were grown by the Czochralski method. Structure analysis of the single crystals by X-ray diffraction (XRD) revealed that (La0.25Gd0.75)2Si2O7 and (La0.235Ce0.015Gd0.75)2Si2O7 crystalize in monoclinic cells (space group P21/c), a = 5.3905(8) Å, b = 8.5605(11) Å, c = 13.957(2) Å, β = 112.223(6)º, and a = 5.3921(7) Å, b = 8.5688(10) Å, c = 13.9172(14) Å, β = 111.980(5)º, respectively. One of the two different rare-earth sites is preferentially occupied by La and Gd atoms or by La, Ce and Gd atoms, and the other is occupied by Gd atoms only. Peaks attributed to the 4f-4f transitions (8S7/2–6G7/2 and 8S7/2–6Ix) of Gd3+ and 4f-5d transitions of Ce3+ were observed in the absorption spectra of (La0.25Gd0.75)2Si2O7 and (La0.235Ce0.015Gd0.75)2Si2O7 single crystals.
AB - Single crystals of (La0.25Gd0.75)2Si2O7 and (La0.235Ce0.015Gd0.75)2Si2O7 were grown by the Czochralski method. Structure analysis of the single crystals by X-ray diffraction (XRD) revealed that (La0.25Gd0.75)2Si2O7 and (La0.235Ce0.015Gd0.75)2Si2O7 crystalize in monoclinic cells (space group P21/c), a = 5.3905(8) Å, b = 8.5605(11) Å, c = 13.957(2) Å, β = 112.223(6)º, and a = 5.3921(7) Å, b = 8.5688(10) Å, c = 13.9172(14) Å, β = 111.980(5)º, respectively. One of the two different rare-earth sites is preferentially occupied by La and Gd atoms or by La, Ce and Gd atoms, and the other is occupied by Gd atoms only. Peaks attributed to the 4f-4f transitions (8S7/2–6G7/2 and 8S7/2–6Ix) of Gd3+ and 4f-5d transitions of Ce3+ were observed in the absorption spectra of (La0.25Gd0.75)2Si2O7 and (La0.235Ce0.015Gd0.75)2Si2O7 single crystals.
KW - Oxide scintillator
KW - Preferential site ordering
KW - Pyrosilicate
KW - Single crystal growth
KW - X-ray diffraction
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U2 - 10.1016/j.jallcom.2018.02.286
DO - 10.1016/j.jallcom.2018.02.286
M3 - Article
AN - SCOPUS:85044140520
VL - 748
SP - 404
EP - 410
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
ER -