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Dielectric Relaxation in CaO–Bi2O3–B2O3 Glasses
Article first published online: 11 SEP 2009
DOI: 10.1111/j.1744-7402.2009.02438.x
© 2009 The American Ceramic Society
Issue
International Journal of Applied Ceramic Technology
Special Issue: Ceramics for Electronic Technologies
Volume 7, Issue Supplement s1, pages E89–E97, April 2010
Additional Information
How to Cite
Majhi, K. and Varma, K. B. R. (2010), Dielectric Relaxation in CaO–Bi2O3–B2O3 Glasses. International Journal of Applied Ceramic Technology, 7: E89–E97. doi: 10.1111/j.1744-7402.2009.02438.x
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Publication History
- Issue published online: 28 APR 2010
- Article first published online: 11 SEP 2009
- Abstract
- Article
- References
- Cited By
Glasses in the system CaO–Bi2O3–B2O3 (in molar ratio) have been prepared using melt-quenching route. Ion transport characteristics were investigated for this glass using electric modulus, ac conductivity and impedance measurements. The ac conductivity was rationalized using Almond–West power law. Dielectric relaxation has been analyzed based on the behavior of electric modulus behavior. The activation energy associated with the electrical relaxation determined from the electric modulus spectra was found to be 1.76 eV, close to that the activation energy for dc conductivity (1.71 eV) indicating that the same species took part in both the processes. The stretched exponent β (0.5–0.6) is invariant with temperature for the present glasses.