Crystal Structure of SrAl2B2O7 and Eu2+ Luminescence
| Autor: | T. Le Mercier, F. Guillen, S. Jaulmes, Claude Fouassier, F. Lucas, Michel Quarton |
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| Rok vydání: | 2000 |
| Předmět: |
Aluminium oxides
Strontium Photoluminescence Inorganic chemistry Doping chemistry.chemical_element Phosphor Crystal structure Condensed Matter Physics Electronic Optical and Magnetic Materials Inorganic Chemistry Crystallography chemistry Materials Chemistry Ceramics and Composites Physical and Theoretical Chemistry Boron Luminescence |
| Zdroj: | Journal of Solid State Chemistry. 150:404-409 |
| ISSN: | 0022-4596 |
| DOI: | 10.1006/jssc.1999.8616 |
| Popis: | The crystal structure of strontium dialuminodiborate SrAl2B2O7 has been established by single-crystal X-ray diffraction methods. The compound crystallizes in the trigonal system (space group R 3 c, Z=6) with cell parameters a=4.893(1) A and c=47.78(1) A. Aluminium and boron atoms are, respectively, in tetrahedral and triangular oxygen coordination. The assembly of Al2O7 units and BO3 triangles forms double layers between which Sr2+ ions are located. The Eu2+-doped crystalline powder exhibits a luminescence band with maximum at 415 nm. Luminescence characteristics are compared to those of other strontium borates. |
| Databáze: | OpenAIRE |
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