Eu:Lu2O3 transparent ceramics prepared by spark-plasma-sintering

T. Thoř; K. Rubešová; V. Jakeš; D. Mikolášová; F. Průša; L. Nádherný; R. Kučerková; M. Nikl

doi:10.1117/12.2544573

30 December 2019 Eu:Lu₂O₃ transparent ceramics prepared by spark-plasma-sintering

T. Thoř, K. Rubešová, V. Jakeš, D. Mikolášová, F. Průša, L. Nádherný, R. Kučerková, M. Nikl

Proceedings Volume 11385, Optics and Measurement International Conference 2019; 113850K (2019) https://doi.org/10.1117/12.2544573
Event: Optics and Measurement 2019 International Conference, 2019, Liberec, Czech Republic

Abstract

Lutetium oxide (Lu₂O₃) is an interesting host material for scintillating applications due to its properties, including high density (9.4 g/cm3), high effective atomic number (Z_eff= 67), chemical and mechanical stability. Although it exhibits some intrinsic luminescent properties, its emission can be tuned to better suit the specific needs of individual applications by doping with lanthanide elements. However, the extremely high melting point of Lu₂O₃ (~2490 °C) makes the fabrication of a single crystal both difficult and costly. Lu₂O₃ is therefore commonly studied in the form of polycrystalline powder and thin films, or highly transparent dense ceramics.

In this work, the fabrication of europium-doped Lu₂O₃ transparent ceramics is presented. First, a powder precursor was prepared using a reverse co-precipitation and characterized utilizing X-ray diffraction, scanning electron microscopy and transmission electron microscopy. Powder was then compacted into dense transparent ceramics by spark-plasmasintering. Photoluminescence, radioluminescence and transmittance spectra, as well as scanning electron microscopy pictures, of sintered Eu:Lu2O3 samples are presented.

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T. Thoř, K. Rubešová, V. Jakeš, D. Mikolášová, F. Průša, L. Nádherný, R. Kučerková, and M. Nikl "Eu:Lu₂O₃ transparent ceramics prepared by spark-plasma-sintering", Proc. SPIE 11385, Optics and Measurement International Conference 2019, 113850K (30 December 2019); https://doi.org/10.1117/12.2544573

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