Datta, A. ; Giri, Anit K. ; Chakravorty, D. (1993) AC conductivity of Sb2O3-P2O5 glasses Physical Review B: Condensed Matter and Materials Physics, 47 (24). pp. 16242-16246. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v47/i24/p16242_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.47.16242
Abstract
AC resistivity has been measured for glasses in the system (Sb2O3)x(P2O5)(1-x) with 0.03 < x < 0.2 over a frequency range 2-100 kHz for temperatures varying from 100 to 350 K. The resistivity shows a frequency dependence given by ρ(ω)∝ω−s with s having values in the range 0.8-0.95. The conductivity in these glasses arises due to the presence of Sb3+ and Sb5+ ions. A correlated-barrier-hopping model of bipolarons predicts hopping-length values which are inconsistent with the overall concentration of antimony ions in the glasses concerned. The overlapping-large-polaron model, on the other hand, gives the correct variation of tunneling distance with glass composition.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 64923 |
| Deposited On: | 15 Oct 2011 12:10 |
| Last Modified: | 15 Oct 2011 12:10 |
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