Growth and spectroscopic characterization of Pb 2+:CaF 2 crystals

I. Nicoara, M. Paraschiva, M. Stef () and F. Stef

The European Physical Journal B: Condensed Matter and Complex Systems, 2012, vol. 85, issue 8, 1-7

Abstract: CaF 2 crystals doped with various concentrations of PbF 2 (0.4, 0.5, 1 and 2 mol%) were grown in vacuum, in a shaped graphite furnace using the vertical Bridgman method. The optical absorption spectra reveal the four characteristic UV absorption bands (labeled A, B, C and D) of the Pb 2+ ions. As the PbF 2 concentration increases, the structure of the bands become clearly visible, that is characteristic for the ns 2 ions in various hosts. High intensity emission bands in the near UV spectral region have been observed. The dependence on the Pb 2+ concentration of the optical absorption and emission of the Pb 2+ :CaF 2 crystals were not reported before. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2012

Keywords: Solid State and Materials (search for similar items in EconPapers)
Date: 2012
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DOI: 10.1140/epjb/e2012-30433-3

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