Abstract
Chromium-doped titanite and malayaite samples, which were synthesised to evaluate their performance as ceramic pigments, show remarkable photoluminescence behaviour. Emissions of centres related to traces of trivalent rare-earth elements (REE) are observed exclusively from chromium-free samples. Their Cr-doped analogues (containing the same REEs on the same concentration levels), in contrast, only show broad-band Cr3+ emission whereas all REE emissions are suppressed. This behaviour is assigned to quenching of REE emissions by chromium centres (i.e., REE3+→Cr3+ energy transfer).
Original language | English |
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Pages (from-to) | 419-424 |
Number of pages | 6 |
Journal | Chemie der Erde |
Volume | 74 |
Issue number | 3 |
DOIs | |
State | Published - Oct 2014 |
Externally published | Yes |
Keywords
- Chromium
- Photoluminescence
- Quenching
- Rare-earth elements
- Titanite
All Science Journal Classification (ASJC) codes
- Geophysics
- Geochemistry and Petrology