Structure, electrical, and optical properties of ZnO-substituted PbO for the Er3+/Yb3+ co-doped Bi2O3–GeO2–Na2O glass system

Structure, electrical, and optical properties of ZnO-substituted PbO for the Er3+/Yb3+ co-doped Bi2O3–GeO2–Na2O glass system: "

Abstract  Glasses of the 0.5Er³⁺/2.5Yb³⁺ co-doped (40Bi₂O₃–20GeO₂–(30 − x)PbO–xZnO–10Na₂O system where x = 0.0, 5, 10, 15, 20, 25, and 30 mol%) have been characterized by FT-IR spectroscopy measurements to obtain information about
the influence of ZnO-substituted PbO on the local structure of the glass matrix. The density and the molar volume have been
determined. The influences of the ZnO-substituted PbO on the structure of glasses have been discussed. The dc conductivity
measured in the temperature range 475–700 K obeys Arrhenius law. The conductivity decreases while the activation energy for
conduction increases with increase ZnO content. The optical transmittance and reflectance spectrum of the glasses have been
recorded in the wavelength range 400–1100 nm. The values of the optical band gap E
_opt for all types of electronic transitions and refractive index have been determined and discussed. The real and imaginary parts
ε₁ and ε₂ of dielectric constant have been determined.

• Content Type Journal Article
• DOI 10.1007/s10853-009-4167-3
• Authors
  
  
  • Shaaban M. Salem, Al Azhar University Department of Physics, Faculty of Science Nasr City 11884 Cairo Egypt
  • I. Shaltout, Al Azhar University Department of Physics, Faculty of Science Nasr City 11884 Cairo Egypt
  
  

• Journal Journal of Materials Science
• Online ISSN 1573-4803
• Print ISSN 0022-2461

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