Nonstochiometry of Lu.sub.3./sub.Al.sub.5./sub.O.sub.12./sub. single crystal and its effects of on luminescence and scintillation properties

0486185 - FZÚ 2018 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
Kamada, K. - Kurosawa, S. - Yokota, Y. - Pejchal, J. - Nikl, Martin - Ohashi, Y. - Yoshikawa, A.
Nonstochiometry of Lu₃Al₅O₁₂ single crystal and its effects of on luminescence and scintillation properties.
Proceedings of the 6th International Conference on Optical, Optoelectronic and Photonic Materials and Applications. Vol. 619. Bristol: IOP Publishing Ltd, 2015 - (Jha, A.; Sweeney, S.), s. 1-4, č. článku 012035. ISBN 9781510808003. ISSN 1742-6588.
[6th International Conference on Optical, Optoelectronic and Photonic Materials and Applications (ICOOPMA). Leeds (GB), 27.07.2014-01.08.2014]
Institucionální podpora: RVO:68378271
Klíčová slova: garnet crystals * growth * luag * defects
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)

Nonstoichiometric Lu3Al5+xO12 (x= 0.05, 0.15, 0.35, 0, -0.05, -0.15, -0.35) crystals were grown by the mu-PD method. Luminescence and scintillation properties such as absorption, excitation and emission spectra, light yield and decay time were evaluated. Expected anti-site defect related host emission have been observed in 250-420nm Emission intensity was increased by increasing the nonstochiometry. The x=-0.35 sample showed the highest light yield of around 12000 photons/MeV and slowest scintillation decay time of 1.96 mu s.
Trvalý link: http://hdl.handle.net/11104/0281045