Influence of co-doped alumina on the microstructure and radioluminescence of SrHfO.sub.3./sub.:Ce ceramics

0545129 - FZÚ 2022 RIV GB eng J - Článek v odborném periodiku
Qian, K. - Pan, Y.B. - Hu, Z.W. - Chen, X.P. - Shi, Y. - Liu, X. - Chen, H.H. - Nikl, Martin - Li, J.
Influence of co-doped alumina on the microstructure and radioluminescence of SrHfO₃:Ce ceramics.
Journal of the European Ceramic Society. Roč. 40, č. 2 (2020), s. 449-455. ISSN 0955-2219. E-ISSN 1873-619X
Grant CEP: GA MŠMT EF16_013/0001406; GA MŠMT(CZ) LO1409; GA MŠMT(CZ) LM2015088
Grant ostatní: OP VVV - SAFMAT(XE) CZ.02.1.01/0.0/0.0/16_013/0001406
Institucionální podpora: RVO:68378271
Klíčová slova: SrHfO₃:Ce * Al ceramics * co-doped alumina * scintillation properties * charge compensation mechanism
Obor OECD: Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Impakt faktor: 5.302, rok: 2020
Způsob publikování: Omezený přístup
https://doi.org/10.1016/j.jeurceramsoc.2019.09.034

SrHfO3:Ce and SrHfO3:Ce,Al powders were prepared by the solid-state synthesis using the commercial HfO2, SrCO3, CeO2 and α-Al2O3 as the starting materials. All the SrHfO3:Ce and SrHfO3:Ce,Al powders calcined at different temperatures within 1100 °C–1300 °C for 8 h in air exhibited a pure SrHfO3 phase. Meanwhile, the effects of different calcination temperatures and co-doped alumina on the microstructure of SrHfO3:Ce,Al powders were discussed. SrHfO3:Ce and SrHfO3:Ce,Al ceramics were successfully fabricated via the vacuum sintering at 1800 °C for 20 h. The alumina acted as the sintering aid, which promoted the densification and eliminated the intragranular pores of SrHfO3:Ce,Al ceramics. The charge disbalance was effectively compensated by co-doped alumina. SrHfO3:Ce,Al ceramics exhibited a higher light yield of 5700 ph/MeV compared with 4600 ph/MeV obtained in SrHfO3:Ce ceramics.
Trvalý link: http://hdl.handle.net/11104/0321881