Study the spectroscopy of samarium encapsulated in silica Xerogel matrices
| Autor: | Baha T. Chiad |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Iraqi Journal of Physics, Vol 9, Iss 15 (2011) |
| Druh dokumentu: | article |
| ISSN: | 2070-4003 2664-5548 |
| Popis: | The sol-gel preparation technique of transparent silica monoliths containing up to 0.5 M of samarium have been described. The sol-gel processing parameters are: acid catalyzed hydrolysis and controlled drying. The prepared monoliths are analyzed by X-ray diffraction, pycnometer measurements, Fourier transformation infrared spectroscopy and optical spectroscopy. The oscillator strengths of the Sm3+ ions in the silica monoliths are calculated. The results show a linear concentration dependence of some Sm3+ transitions in UV/Vis absorption spectra and formation of Sm3+ clusters inside the pores structure of silica monoliths at high Sm3+ concentration |
| Databáze: | Directory of Open Access Journals |
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