Diffusion of Ag ions under random potential barriers in silver-containing chalcogenide glasses

被引：18
|
作者：
Stehlik, S. [1 ,2 ,5 ]
Shimakawa, K. [1 ,2 ,3 ,4 ]
Wagner, T. [1 ,2 ]
Frumar, M. [1 ,2 ]
机构：
[1] Univ Pardubice, Dept Gen & Inorgan Chem, Fac Chem Technol, Pardubice 53210, Czech Republic
[2] Univ Pardubice, Ctr Mat Sci, Pardubice 53210, Czech Republic
[3] Nagoya Ind Sci Inst, Nagoya, Aichi 4600008, Japan
[4] Gifu Univ, Dept Elect & Elect Engn, Gifu 5011193, Japan
[5] AS CR, Inst Phys, Prague 16200, Czech Republic
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2012年 / 45卷 / 20期
关键词：
CONDUCTIVITY;
D O I：
10.1088/0022-3727/45/20/205304
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We show that a random walk model of diffused ions interprets well the experimentally deduced Nyquist plots in ionic chalcogenide glasses. Fitting of the model to the experimental data in the Nyquist plots of Ag-As-S(Se) glasses taken as case examples yields important physical parameters such as number of mobile Ag+ ions, hopping relaxation time and diffusion coefficient. It was found that the number of freely moving Ag+ ions is almost independent of Ag content in Ag-x (As0.33S(Se)(0.67))(100-x) glasses, while the maximum hopping relaxation time is highly dependent on Ag concentration.
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页数：5
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