Structural and electrical properties of the ternary
ionic–electronic conducting glass system xAgI–(1−
x)[0.67Ag2O–0.33V2O5], where x=0.4, 0.5, 0.6, 0.7, and 0.8
were studied for emphasizing the influence of silver iodide
concentration on the transport properties of the based vanadate
glasses. The glasses were prepared by melt quenching technique
and characterized using X-ray diffraction (XRD), FTIR
spectra, and differential thermal analysis (DTA). Electrical
conductivity (σ), dielectric constant (ε′), dielectric loss (ε″),
and impedance spectra (Z′-Z″) were studied for all samples.
All glasses showed a mixed ionic–electronic conductance
with a high ionic conductivity for the sample with x=0.7.
The electronic contribution to the total conductivity and the
ionic (ti) and electronic transport numbers (te) were determined
for each glass sample using Wagner’s DC polarization
technique. The variation in electrical properties with each of
composition, temperature, and frequency was analyzed and
discussed. |
