High-pressure optical studies of LMA:V2+
| Autor: | B.R. Jovanić, Bratimir Panić, Bozidar Radenkovic, Bruno Viana, Marijana Despotovic |
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| Rok vydání: | 2010 |
| Předmět: |
Oscillator strength
Chemistry Hydrostatic pressure Analytical chemistry 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Fluorescence 010309 optics Coupling parameter Position (vector) 0103 physical sciences General Materials Science Atomic physics 0210 nano-technology Luminescence Refractive index Line (formation) |
| Zdroj: | Materials Chemistry and Physics. 124:109-112 |
| ISSN: | 0254-0584 |
| DOI: | 10.1016/j.matchemphys.2010.05.075 |
| Popis: | The effect of hydrostatic pressure on R line position and fluorescence lifetime τ for R line (2E → 4A2 transition) in LMA:V2+ (LaMgAl11O19:V2+) was considered in the 0–100 kbar pressure range. Position of the R line is insensitive to pressure in the considered pressure range. Fluorescence lifetime τ linearly increases with pressure. τ has been calculated on the basis of the assumption that high pressure induces changes in compression rate k, oscillator strength f, spin-orbital coupling parameter ξ and refraction index n. The calculated τ agreed well with all the experimental data in the pressure range specified. The presented model provides a possible way of producing effect of high-pressure on R line fluorescence lifetime in LMA:V2+. |
| Databáze: | OpenAIRE |
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