Original title: Comparison of Lu.sub.3./sub.Al.sub.5./sub.O.sub.12./sub.:Ce(Er) Bulk and Nono Single Crystals
Authors: John, David ; Volf, J. ; Bartosiewicz, K. ; Horiai, T. ; Kamada, K. ; Yoshikawa, A. ; Remeš, Z. ; Landová, L. ; Ledoux, G. ; Houel, J. ; Prokhorov, Andriy ; Buryi, Maksym
Document type: Papers
Conference/Event: International Conference on Nanomaterials - Research & Application /16./ NANOCON 2024, Brno (CZ), 20241016
Year: 2025
Language: eng
Abstract: Lutetium aluminum garnet (LuAG) is a crystal well known for being extraordinarily useful for building highly efficient laser devices or ionizing radiation detectors. To design the most favourable physical properties, different dopants and synthesis methods are constantly developed, primarily focused on the advantages of single crystals. However, the downscaling of the luminescent materials to nanosize also creates additional benefits of increased surface to volume ratio and thus, the efficiency of luminescence or doping can be improved. Therefore, the aim of this work is to compare the single crystals and nanogarnets under the influence of Ce and Er doping. Optical properties of the garnet single crystals are very well known while the nanocrystals should have been studied first. Synergy methods like X-ray diffraction (XRD), photoluminescence (PL), photothermal deflection spectroscopies (PDS) were applied to the LuAG:Ce(Er) nanocrystals whereas the electron paramagnetic resonance (EPR) measurements were carried out in both single and nanocrystals. The main conclusion is that cerium enters nanocrystalline lattice becoming Ce4+ compensated by the Cr2+, Fe2+ ions (accidental impurities) whereas it is also Ce3+ in the single crystal. About one order of magnitude larger Er3+ content was observed in the case of nanocrystals as compared to single crystals.
Keywords: Cerium; EPR; Erbium; Lutetium aluminum garnet; Nanocrystal; Photoluminescence; Single crystal
Host item entry: NANOCON Conference Proceedings, ISBN 978-80-88365-24-2, ISSN 2694-930X
Note: Související webová stránka: https://www.confer.cz/nanocon/2024/4979-optical-properties-of-lu3al5o12-ce-er-nanocrystals

Institution: Nuclear Physics Institute AS ČR (web)
Document availability information: Fulltext is available in the digital repository of the Academy of Sciences.
Original record: https://hdl.handle.net/11104/0370015

Permalink: http://www.nusl.cz/ntk/nusl-692663


The record appears in these collections:
Research > Institutes ASCR > Nuclear Physics Institute
Conference materials > Papers