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Transport in Compounds Containing a Dispersed Second Phase.

Published online by Cambridge University Press:  21 February 2011

J. Bruce Wagner
J. Bruce Wagner*
Affiliation:
Center for Solid State Science and Departments of Chemistry Mechanical and Aerospace Engineering and Physics, Arizona State University, Tempe, AZ 85287
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Abstract

The introduction of a dispersion of small (≃ 1μ1m) insulating particles into an ionic conductor results in an increase in the ionic conductivity. This behavior is not in accord with classical theory. A number of different examples such as a dispersion of a metallic conductor in a semiconductor, a dispersion of an insulator in a semicondutor, and a dispersion of a metallic conductor in an ionic conductor all yield unusual transport behaviors when the surface area to volume ratio of the dispersoid is large. Under such conditions, a space charge layer or double layer adjacent to the dispersoid must be considered. Practical applications such as solid electrolytes, electrodes, corrosion systems and geological systems were discussed.

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References

REFERENCES

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