Bulk single crystal growth of W Co-doped Ce:Gd.sub.3./sub.Ga.sub.3./sub.Al.sub.2./sub.O.sub.12./sub. by Czochralski method

0532957 - FZÚ 2021 RIV US eng J - Journal Article
Ueno, M. - Kim, K.J. - Kamada, K. - Babin, Vladimir - Nikl, Martin - Nihei, T. - Yoshino, M. - Yamaji, A. - Toyoda, S. - Sato, H. - Yokota, Y. - Kurosawa, S. - Ohashi, Y. - Kochurikhin, V.V. - Yoshikawa, A.
Bulk single crystal growth of W Co-doped Ce:Gd₃Ga₃Al₂O₁₂ by Czochralski method.
IEEE Transactions on Nuclear Science. Roč. 67, č. 6 (2020), s. 1045-1048. ISSN 0018-9499. E-ISSN 1558-1578
Institutional support: RVO:68378271
Keywords : oxides * scintillator materials * scintillators * single crystal growth
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 1.679, year: 2020
Method of publishing: Limited access
https://doi.org/10.1109/TNS.2020.2968088

Effects of the tungsten (W) ions co-doping on the crystal growth, optical and scintillation properties for the Czochralski (Cz) grown Ce:Gd3Ga3Al2O12(GGAG) single crystals were investigated. The W 0%, 0.1%, 0.3%, 1%, and 5% codoped Ce 1%:GGAG single crystals with a diameter of 1 in and length of 60–80 mm were grown by the Cz method. The effective segregation coefficient of the W ions was found as 0.002, 0.001, and 0.005 for W 0.1%, 0.3%, and 1%, Ce:GGAG, respectively. The segregation of W ions in GGAG host, light yield, and scintillation decay of the W co-doped Ce:GGAG were evaluated. The light yield decreased as the concentration of W co-dopant increased and toward the tail of the crystal. Furthermore, the defect role and related charge trapping in the W co-doped crystals were monitored by the thermo-stimulated luminescence.

Permanent Link: http://hdl.handle.net/11104/0311400