Ultra-Wideband Dielectric and Impedance Spectroscopy of B₂O₃–Bi₂O₃–SiO₂–Sm₂O₃ Glasses

Abstract

B₂O₃–Bi₂O₃–SiO₂–Sm₂O₃ glasses have been synthesized by melt quench technique for different mol% Sm₂O₃. The electrical behavior of these glasses was studied by impedance spectroscopy technique at room temperature, covering the frequency range between 1 M and 1 GHz. In addition, dielectric measurements were made to evaluate the dependence of the dielectric constant different Sm ions. The dielectric constant is approximately 3200 at room temperature for 0.5 mol% Sm-doped compositions at 645 MHz frequency. The results show significant variations for the real part and large variations for the imaginary part among different frequency with different Sm fractions. Complex impedance analysis was used to estimate its electrical conductivity as well as its corresponding optical properties.

KEYWORDS:

• Dielectric properties
• impedance spectroscopy
• optical properties

Acknowledgments

The authors thankful for the contributions of all graduate students and research associates in the Center of Excellence in Glass Technology and Materials Science (CEGM), Faculty of Science and Technology, Nakhon Pathom Rajabhat University and the division of Industrial Materials Science, Faculty of Science and Technology, Rajamangala University of Technology Phra Nakhon for instrument and facilities.