High-pressure optical studies of LMA:V |
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Authors: | BR Jovani? B Viana B Radenkovi? M Despotovi? B Pani? |
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Affiliation: | 1. Institute of Physics, University of Belgrade, Lab. Multidisc. Res., P.O. Box 68, 11080 Zemun, Serbia;2. Laboratoire de Chimie de la Matière Condensée de Paris CNRS UMR 7574, ENSCP, 11 Rue P&M Curie, Paris Cedex 05, France;3. Faculty of Organizational Sciences, University of Belgrade, Jove Ili?a 154, Belgrade 11000, Serbia |
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Abstract: | 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+. |
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Keywords: | 62 50 |
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