2015
DOI: 10.1142/s2010135x1550023x
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Dielectric relaxation in pure and Co-doped Bi12GeO20 single crystals

Abstract: We report the results of investigation of dielectric spectroscopy study of single crystals of Bi 12 GeO 20 and Bi 12 GeO 20 doped with Co nanoparticles. The complex dielectric constant was measured in the temperature interval from 5 to 450 K and frequencies from 1 Hz to 1 MHz. The electrical conductivity of both samples was thermally activated with potential barriers of 0.55 eV and 0.59 eV, respectively. Doped samples had bigger complex dielectric constants and 0 exhibited slightly steeper temperature dependen… Show more

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