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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.13 [2006] >
IJEMS Vol.13(5) [October 2006] >
| Title: | Ionic transport in sodium phosphate glasses doped with chlorides of Co, Cd and Ag |
| Authors: | Das, S S
Srivastava, Vibha
Singh, P |
| Issue Date: | Oct-2006 |
| Publisher: | CSIR |
| IPC Code: | C03C4/18 |
| Abstract: | Several samples of
sodium phosphate glasses doped with different concentrations of chlorides of
cadmium and cobalt along with samples of undoped sodium phosphate glass have
been prepared. Sodium phosphate glasses doped with varying amounts of AgCl have
also been prepared to see the role of Ag+ ion in modifying the
conductivity of sodium phosphate glass. These glasses have been characterized
by elemental analysis, X-ray diffraction, IR spectra, differential scanning
calorimetry, transference number measurements and electrical conductivity
studies. All the glasses are found to be essentially ionic conductors. The
undoped sodium phosphate glass has low σ value in comparison to the
doped ones. The values of ionic conductivity in Na2O‑P2O5‑CdCl2
and Na2O-P2O5-CoCl2 glasses are
maximum for 1% CdCl2 and 5% CoCl2 doped ones
respectively. However, in the case of Na2O-P2O5-AgCl
glass the σ values go on increasing with the increasing concentrations of the
dopant AgCl and the following sequence is observed.
σ (-CdCl2) < σ(-CoCl2) < σ (-AgCl)
These results have
been explained on the basis of changes in the structure of sodium phosphate
glass matrix by the addition of different dopant cations, viz; Cd2+,
Co2+ and Ag+. |
| Page(s): | 455-461 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.13(5) [October 2006]
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