Mg, Ce co-doped Lu.sub.2./sub.Gd.sub.1./sub.(Ga,Al).sub.5./sub.O.sub.12./sub. by micro-pulling down method and their luminescence properties

0501285 - FZÚ 2019 RIV JP eng J - Článek v odborném periodiku
Kamada, K. - Yamaguchi, H. - Yoshino, M. - Kurosawa, S. - Shoji, Y. - Yokota, Y. - Ohashi, Y. - Pejchal, Jan - Nikl, Martin - Yoshikawa, A.
Mg, Ce co-doped Lu₂Gd₁(Ga,Al)₅O₁₂ by micro-pulling down method and their luminescence properties.
Japanese Journal of Applied Physics. Roč. 57, č. 4 (2018), s. 1-6, č. článku 04FJ06. ISSN 0021-4922. E-ISSN 1347-4065
GRANT EU: European Commission(XE) 644260 - INTELUM
Grant ostatní: AV ČR(CZ) JSPS-17-18
Program: Bilaterální spolupráce
Institucionální podpora: RVO:68378271
Klíčová slova: scintillation * garnet * codoping
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 1.471, rok: 2018

The effects of Mg co-doping on the scintillation properties of Ce:Lu2Gd1(Ga,Al)5O12 (LGGAG) single crystals with different Ga/Al ratios were investigated. Mg co-doped and non co-doped Ce:LGGAG single crystals were grown by the micro-pulling down (μ-PD) method. Absorption spectra, radioluminescence (RL) spectra, pulse height spectra, and scintillation decay were measured to reveal the effect of Mg co-doping. Ce4+ charge transfer (CT) absorption band peaking at ~260 nm was observed in Mg co-doped samples, which is in good agreement with previous reports for the Ce4+ CT absorption band in other garnet-based crystals. The scintillation decay time tended to be accelerated and the light yield tended to be decreased by Mg co-doping at higher Ga concentrations.
Trvalý link: http://hdl.handle.net/11104/0293274