J Mater Sci Technol ›› 2001, Vol. 17 ›› Issue (02): 278-282.

• Research Articles • Previous Articles     Next Articles

Dielectric properties of some berate glasses

Z.A.El-Hadi   

  1. Chemistry Department, College For Girls, Ain-Shams University, Heliopolis, Cairo, Egypt
  • Received:2000-04-10 Revised:1900-01-01 Online:2001-03-28 Published:2009-10-10
  • Contact: Z.A.El-Hadi

Abstract: The dielectric constant, epsilon', and the dielectric loss, epsilon ", for some selected lead berate glasses within the frequency band 10(5) to 10(7) Hz and the temperature range (20 similar to 50)degreesC were measured. The dielectric dispersion and the dielectric loss absorption bands were observed. the relaxation time, the activation enthalpy and entropy change of the dielectric relaxation were calculated. The results obtained were discussed and correlated to the internal network structure of the glasses studied.

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