Electrical properties of ion conducting molybdate glasses

Bhattacharya, S. ; Ghosh, A. (2006) Electrical properties of ion conducting molybdate glasses Journal of Applied Physics, 100 (11). 114119_1-114119_5. ISSN 0021-8979

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Official URL: http://jap.aip.org/resource/1/japiau/v100/i11/p114...

Related URL: http://dx.doi.org/10.1063/1.2400116


The electrical conductivity and conductivity relaxation of xAg2O-(1-x)MoO3 glasses have been reported in the frequency range of 10 Hz-2 MHz and temperature range of 183-413 K. The dc conductivity and activation energy for the binary silver molybdate glasses have been compared with those of Ag+ ion conducting binary phosphate, borate, and tellurite glasses. The silver molybdate glasses exhibit the highest conductivity and the lowest activation energy of the glasses formed with other glass formers such as phosphate, borate, and tellurite containing the same modifier Ag+ ions. We have analyzed the ac conductivity using the power law and the electric modulus formalisms. We have observed that the concentration of mobile Ag+ ions is not thermally activated and only 10%-25% of the total Ag+ ions contribute to the dynamic processes and are independent of the Ag2O content. We have observed that the conductivity relaxation is highly nonexponential. The motion of Ag+ ions is decoupled more and more from the viscous motion of the glassy matrix with the increase of Ag2O content in the investigated glass composition.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
Keywords:Silver Compounds; Molybdenum Compounds; Glass; Ionic Conductivity; Relaxation; Vitreous State; Plastic Flow
ID Code:72832
Deposited On:29 Nov 2011 13:25
Last Modified:29 Nov 2011 13:25

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