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

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  • I. Nicoara
  • M. Paraschiva
  • M. Stef
  • F. Stef

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

Suggested Citation

  • I. Nicoara & M. Paraschiva & M. Stef & F. Stef, 2012. "Growth and spectroscopic characterization of Pb 2+ :CaF 2 crystals," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 85(8), pages 1-7, August.
  • Handle: RePEc:spr:eurphb:v:85:y:2012:i:8:p:1-7:10.1140/epjb/e2012-30433-3
    DOI: 10.1140/epjb/e2012-30433-3
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    Keywords

    Solid State and Materials;

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