Spectroscopic studies on blue halite
| Autor: | Nimai Pathak, Pranesh Sengupta, P. Mahadik |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Photoluminescence
Biophysics 02 engineering and technology Crystal structure engineering.material Cubic crystal system 010402 general chemistry 01 natural sciences Biochemistry Metal symbols.namesake Spectroscopy Chemistry General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Atomic and Molecular Physics and Optics 0104 chemical sciences Crystallography visual_art engineering visual_art.visual_art_medium symbols Halite 0210 nano-technology Raman spectroscopy Stoichiometry |
| Zdroj: | Journal of Luminescence. 194:327-333 |
| ISSN: | 0022-2313 |
| Popis: | Natural halite displays wide range of colors which is considered as mineralogical rarity. Such variation suggests that the said cubic crystal structure can harbor a great variety of lattice defects as color centers. Raman spectroscopy is the powerful tool for investigation of mineralogical phases as well as very sensitive to the defects formed in crystal structure. Amongst various types of color centers (F, R1, R2, M – centers and Plasmons) found in natural colored halite samples, F-centers in present colored halite samples have been confirmed using Photoluminescence (PL) analysis. Detail Spectroscopic studies using Micro-Raman spectroscopy and Photoluminescence (PL) indicate that the blue coloration of the studied halite crystals is due to stoichiometric excess of metallic sodium (Na-colloids) in crystal lattices. |
| Databáze: | OpenAIRE |
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