Luminescence and scintillation properties of Lu.sub.3./sub.Al.sub.5./sub.O.sub.12./sub. nanoceramics sintered by SPS method

0470000 - FZÚ 2017 RIV NL eng J - Článek v odborném periodiku
Pejchal, Jan - Babin, Vladimir - Beitlerová, Alena - Kučerková, Romana - Pánek, D. - Barta, J. - Čuba, V. - Yamaji, A. - Kurosawa, S. - Mihóková, Eva - Ito, A. - Goto, T. - Nikl, Martin - Yoshikawa, A.
Luminescence and scintillation properties of Lu₃Al₅O₁₂ nanoceramics sintered by SPS method.
Optical Materials. Roč. 53, Mar (2016), s. 54-63. ISSN 0925-3467. E-ISSN 1873-1252
Grant CEP: GA ČR GA13-09876S; GA MŠMT(CZ) LH14266
Institucionální podpora: RVO:68378271
Klíčová slova: lutetium-aluminium-garnet * spark-plasma-sintering * nanoceramics * scintillator * Ce-doping
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 2.238, rok: 2016

Ce-doped lutetium aluminum garnet Lu3Al5O12 (LuAG) nanoceramics were fabricated at 1600 °C and 1700 °C by spark-plasma sintering (SPS) method from nano-powders prepared by radiation synthesis. Both undoped and Ce-doped LuAG ceramic samples were also prepared from the nano-powders at 1700 °C with significantly increased pre-heating rate. Very large grains and no pores were revealed in the undoped sample, which was the only transparent one. The radioluminescence measurements revealed superior overall scintillation efficiency of the samples sintered at the temperature 1700 °C. The photoluminescence decay of the defect emission was characterized by an extremely fast decay time of a few nanoseconds. Influence of sintering procedure and subsequent annealing on the luminescence and scintillation properties is discussed.
Trvalý link: http://hdl.handle.net/11104/0267748