Dynamics of Ag+ ions in Ag2S-doped superionic AgPO3 glasses

Bhattacharya, S. ; Dutta, D. ; Ghosh, A. (2006) Dynamics of Ag+ ions in Ag2S-doped superionic AgPO3 glasses Physical Review B, 73 (10). 104201_1-104201_6. ISSN 0163-1829

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Official URL: http://prb.aps.org/abstract/PRB/v73/i10/e104201

Related URL: http://dx.doi.org/10.1103/PhysRevB.73.104201


Dynamics of Ag+ ions in Ag2S-doped AgPO3 glasses have been studied in the frequency range 10 Hz to 2 MHz and in the temperature range 93-323 K. The composition dependence of the dc conductivity and the activation energy of these glasses has been compared with that of the AgI-doped AgPO3 glasses. An attempt has been made to explain the comparatively lower conductivity for the present Ag2S doped glasses than that for the AgI-doped glasses by analyzing the Fourier transform infrared data. The frequency-dependent electrical data have been analyzed in the framework of conductivity formalism. We have obtained the mobile ion concentration and the power-law exponent from the analysis of the conductivity spectra. We have observed that the concentration of Ag+ ions is independent of temperature and the conductivity is primarily determined by the mobility. It has also been observed that a fraction of the Ag+ ions in the glass is involved in the dynamic process. Scaling of the conductivity spectra is observed to be independent of temperature and Ag2S content in the compositions.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:11750
Deposited On:13 Nov 2010 13:57
Last Modified:02 Jun 2011 05:00

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