Calcium fluoride crystals doped with various concentrations of PbF 2 have been grown using the Bridgman technique. The optical absorption spectra reveal the characteristic UV absorption bands of the Pb 2+ ions. The distribution of the Pb 2+ -ions along four crystals has been investigated using the optical absorption method. Taking into account the relationship between the optical absorption coefficient and the concentration of the impurities in the samples, the effective segregation coefficient of the Pb 2+ ions has been calculated. Our study shows that the effective segregation coefficient of the Pb 2+ ions in CaF 2 host depends on the dopant concentration, and varies between 0.85 and 1.15, for 0.5 mol%PbF 2 and 3 mol%PbF 2 -doped CaF 2 , respectively.
Articles you may be interested inBroadband sensitization of downconversion phosphor YPO4 by optimizing TiO2 substitution in host lattice co-doped with Pr3+-Yb3+ ion-couple Abstract. Calcium fluoride crystals doped with various concentration of PbF 2 were grown using the Bridgman technique. The optical absorption spectra reveal the characteristic UV absorption bands of the divalent Lead. The concentration distribution of the Pb 2+ -ions along of four crystals has been investigated using the optical absorption method. From our study results that the effective distribution coefficient of the Pb 2+ ions in CaF 2 host depends on the dopant concentration, and varies between 0.85 and 1.15.
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