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Dielectric Properties of Nanocomposites of Silver in a Glass-ceramic Containing the Lithium Niobate Phase

Published online by Cambridge University Press:  31 January 2011

A. Dan  and
D. Chakravorty
A. Dan
Affiliation:
Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700 032, India
D. Chakravorty
Affiliation:
Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700 032, India
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Abstract

Glass-ceramics containing the LiNbO3 phase were used to grow nanometer-sized silver metal particles with median diameters in the range 10.5–17.3 nm. These nanocomposites showed large values of dielectric constant of the order of 103–104. Bergman's space charge model of a two-component composite gave results that differed from the experimental data. The polarization mechanism was concluded to be electronic in origin. An interrupted metallic strand model developed earlier by Rice and Bernasconi was used to explain the results obtained in the present specimen system.

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Articles
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Journal of Materials Research , Volume 15 , Issue 6 , June 2000 , pp. 1324 - 1330
Copyright
Copyright © Materials Research Society 2000

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