Glasses in the system (Na2B4O7)75(Fe2O3)25-x(Bi2O3)x with x=0,5,15 and 25 mol % were prepared. A.c. Conductivity (σa.c) of the prepared samples has been measured in the frequency range (0.5-20 kHz). The measurements were carried out in the temperature range (290-420K). The obtained results showed that, σa.c. obey the relation σa.c(ω)=Aωs, and the exponent (s) was found to decrease with increasing temperature. The values of s of all the investigated samples lie between 0.3 and 0.7. The analysis of the results reveals that, the a.c. conductivity of the investigated samples follow the correlated barrier hopping (C.B.H) model. The dependence of the dielectric constant (έ) and dielectric loss (tanδ) on both temperature and frequency are also discussed in the framework of the current theories. The effect of
(2004). The Conduction Mechanism and Dielectric Behavior of Sodium Borate Glasses Containing Fe and Bi ions. Egyptian Journal of Solids, 27(2), 299-308. doi: 10.21608/ejs.2004.149854
MLA
. "The Conduction Mechanism and Dielectric Behavior of Sodium Borate Glasses Containing Fe and Bi ions". Egyptian Journal of Solids, 27, 2, 2004, 299-308. doi: 10.21608/ejs.2004.149854
HARVARD
(2004). 'The Conduction Mechanism and Dielectric Behavior of Sodium Borate Glasses Containing Fe and Bi ions', Egyptian Journal of Solids, 27(2), pp. 299-308. doi: 10.21608/ejs.2004.149854
VANCOUVER
The Conduction Mechanism and Dielectric Behavior of Sodium Borate Glasses Containing Fe and Bi ions. Egyptian Journal of Solids, 2004; 27(2): 299-308. doi: 10.21608/ejs.2004.149854