0385474 - FZÚ 2013 RIV NL eng J - Článek v odborném periodiku
Sugiyama, K. - Yanagida, T. - Fujimoto, Y. - Yokota, Y. - Ito, A. - Nikl, Martin - Goto, T. - Yoshikawa, A.
Basic study of Eu²⁺-doped garnet ceramic scintillator produced by spark plasma sintering.
Optical Materials. Roč. 35, č. 2 (2012), s. 222-226. ISSN 0925-3467. E-ISSN 1873-1252
Grant CEP: GA MŠMT LH12150
Výzkumný záměr: CEZ:AV0Z10100521
Klíčová slova: Eu²⁺ 5d–4f transition * scintillator * spark plasma sintering
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.918, rok: 2012 ; AIS: 0.547, rok: 2012
DOI: https://doi.org/10.1016/j.optmat.2012.08.008

We report a new discovery of Eu2+-doped bulk garnet ceramic scintillators based on reduction of Eu3+ ions without additives. Eu2+-doped Y3Al5O12 and Lu3Al5O12 ceramics were prepared by spark plasma sintering (SPS) method. Using SPS, the green and blue luminescence was observed under UV lamp excitation for Eu2+-doped Y3Al5O12 and Lu3Al5O12 ceramics, respectively. Under excitation by 241Am alpha-ray the Eu2+ 5d–4f emission was observed in radioluminescence spectra both samples. For the first time, scintillation response due to Eu2+ 5d–4f luminescence was observed in the bulk garnet oxide materials. In addition, Eu-doped Al2O3 prepared by SPS showed Eu2+ 5d–4f emission in the radioluminescence spectrum. It is confirmed that Al is a key element to reduce Eu3+ as well as highly reductive condition in SPS.
Trvalý link: http://hdl.handle.net/11104/0214708