کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1481128 | 1510454 | 2014 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Analysis of the distribution of Tm3 + ions in LaF3 containing transparent glass-ceramics through X-ray absorption spectroscopy Analysis of the distribution of Tm3 + ions in LaF3 containing transparent glass-ceramics through X-ray absorption spectroscopy](/preview/png/1481128.png)
• Tm incorporation in LaF3 was confirmed using a first coordination shell model.
• The preferential inclusion of Tm in LaF3 crystals was confirmed and quantified.
• Tm3 + concentration in LaF3 nano-crystals increases during crystallisation process.
Incorporation of rare-earth (RE) ions in the fluoride crystals of oxyfluoride glass-ceramics greatly improves the optical properties of these materials, such as the up-conversion emission. In this work, we present a study of this incorporation using X-ray absorption near-edge structure (XANES) spectroscopy and extended X-ray absorption fine structure (EXAFS) spectroscopy. Both techniques allow quantifying the distribution of these ions in the glass matrix and the fluoride crystals. We found that 27% of Tm3 + ions are incorporated in LaF3 nano-crystals.
Journal: Journal of Non-Crystalline Solids - Volume 384, 15 January 2014, Pages 83–87