Fabrication and luminescence of Ce-doped GGAG transparent ceramics, effect of sintering parameters and additives
| Autor: | Anna Vedda, Jan Hostaša, Mauro Fasoli, Andreana Piancastelli, F. Cova, Chiara Zanelli, Valentina Biasini |
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| Přispěvatelé: | Hostasa, J, Cova, F, Piancastelli, A, Fasoli, M, Zanelli, C, Vedda, A, Biasini, V |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Fabrication
Materials science Luminescence chemistry.chemical_element Sintering Gallium Gadolinium 02 engineering and technology Sintering aid 01 natural sciences Hot isostatic pressing Transparent ceramic 0103 physical sciences Materials Chemistry Ceramic Ceramici trasparenti 010302 applied physics Transparent ceramics Process Chemistry and Technology Garnet Metallurgy Scintillator 021001 nanoscience & nanotechnology Microstructure Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry visual_art Ceramics and Composites visual_art.visual_art_medium 0210 nano-technology GGAG |
| Zdroj: | Ceramics international 45 (2019): 23283–23288. doi:10.1016/j.ceramint.2019.08.025 info:cnr-pdr/source/autori:Hostasa J.; Cova F.; Piancastelli A.; Fasoli M.; Zanelli C.; Vedda A.; Biasini V./titolo:Fabrication and luminescence of Ce-doped GGAG transparent ceramics, effect of sintering parameters and additives/doi:10.1016%2Fj.ceramint.2019.08.025/rivista:Ceramics international/anno:2019/pagina_da:23283/pagina_a:23288/intervallo_pagine:23283–23288/volume:45 |
| DOI: | 10.1016/j.ceramint.2019.08.025 |
| Popis: | Ce-doped garnets find their use as scintillators as well as phosphors. Among synthetic garnets, gallium gadolinium aluminium garnet (GGAG) is a relatively new and interesting material, a mixed garnet that has displayed very good scintillation and luminescence properties. In the presented work Ce-doped GGAG ceramic samples were produced by reaction sintering from commercial oxide powders. The mixed powders were pressed into pellets and sintered. In order to achieve transparency of a ceramic material, it is crucial to eliminate porosity. Therefore, a number of process parameters and their influence on the microstructure and optical quality of the ceramics were studied: starting powders, sintering additives and sintering conditions. The sintering process consisted of two steps, viz. pressureless sintering in air followed by hot isostatic pressing. Luminescence properties of the sintered ceramics were studied by means of photo-luminescence and correlated to the fabrication process parameters. |
| Databáze: | OpenAIRE |
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