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

被引：28

作者：

Bhattacharya, S ^{[1
]}

Dutta, D ^{[1
]}

Ghosh, A ^{[1
]}

机构：

[1] Indian Assoc Cultivat Sci, Dept Solid State Phys, Kolkata 700032, India

来源：

PHYSICAL REVIEW B | 2006年 / 73卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.73.104201

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：6

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