PbWO4 formation during controlled crystallization of lead borate glasses
| Autor: | Izabela Czopek, Joanna Pisarska, Wojciech A. Pisarski, Radosław Lisiecki, Tomasz Goryczka, Witold Ryba-Romanowski |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Lanthanide
Materials science Process Chemistry and Technology Doping Inorganic chemistry chemistry.chemical_element Borate glass Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention chemistry law Materials Chemistry Ceramics and Composites Physical chemistry Emission spectrum Crystallite Crystallization Luminescence Boron |
| Zdroj: | Ceramics International. 39:9151-9156 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2013.05.013 |
| Popis: | Lead borate glasses were prepared and then heat treated in order to obtain transparent glass-ceramics. Controlled crystallization of precursor lead borate glass at appropriate annealing temperature and time led to formation of the PbWO 4 crystallites. The observed broad blue emission band is related to the PbWO 4 crystallites. The influence of PbX 2 content (X=F, Cl, Br), PbF 2 concentration and lanthanide doping (Eu, Dy) on the excitation and emission spectra of lead borate glass-ceramics containing PbWO 4 phase was examined. The relationship between Pb–X bond and spectral line width of the blue emission can be successfully observed, when halogen X ions (X=F, Cl or Br) are also present in the distorted PbWO 4 crystallites. |
| Databáze: | OpenAIRE |
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