Crystallization of lead-based and lead-free oxyfluoride germanate glasses doped with erbium during heat treatment process
| Autor: | Agata Górny, Tomasz Goryczka, Joanna Janek, Ewa Pietrasik, Wojciech A. Pisarski, Marta Sołtys, Joanna Pisarska |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Doping chemistry.chemical_element Barium 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials law.invention Erbium chemistry.chemical_compound Nanocrystal chemistry law Phase (matter) 0103 physical sciences Materials Chemistry Ceramics and Composites Physical chemistry Germanate Crystallization 0210 nano-technology Fluoride |
| Zdroj: | Journal of Non-Crystalline Solids. 501:121-125 |
| ISSN: | 0022-3093 |
| DOI: | 10.1016/j.jnoncrysol.2018.01.005 |
| Popis: | Oxyfluoride lead-based and lead-free germanate glasses were heat-treated in order to fabricate transparent glass-ceramics. Cubic β-PbF2 nanocrystals are well formed during crystallization of lead germanate glass. The up-conversion luminescence spectra of Er3+ ions in lead germanate glass-ceramic system are enhanced significantly due to partial incorporation of the optically active ions into fluoride crystalline phase. These effects are not significant in oxyfluoride lead-free germanate glass after heat treatment process. The crystallization of barium gallo-germanate glass with BaF2 is more complex and the presence of four crystalline phases BaF2, BaO, Ba3Ga2Ge4O14 and GeO2 was verified by X-ray diffraction measurements. |
| Databáze: | OpenAIRE |
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