Dielectric relaxation in ytterbium- and lead-doped calcium fluoride crystals

Marius Stef (), Irina Nicoara and Florica Stef

The European Physical Journal B: Condensed Matter and Complex Systems, 2013, vol. 86, issue 4, 1-8

Abstract: YbF 3 -doped and 1 mol% PbF 2 co-doped CaF 2 crystals were grown by vertical Bridgman method using a shaped graphite furnace in vacuum. Dielectric spectra and optical absorption spectra were measured in order to study the influence of Pb 2+ ions on the charge compensating defects formation. The influence of Pb 2+ ions on the various charge compensating defects depend on the YbF 3 concentration. For low YbF 3 concentrations the influence is stronger than for concentrations higher than 1 mol% YbF 3 . Dielectric relaxation in double doped (Yb,Pb):CaF 2 crystals in order the study the charge compensating defects formation was not reported before. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

Keywords: Solid State and Materials (search for similar items in EconPapers)
Date: 2013
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DOI: 10.1140/epjb/e2013-31004-x

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