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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.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 24: Symposium B – Defect Properties and Processing of High-Technology Nonmetallic Materials , 1983 , 119
Copyright
Copyright © Materials Research Society 1984

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References

REFERENCES

1. Wagner, C., “The Electrical Conductivity of Semiconductors Involving Inclusions of Another Phase,” J. Phys. Chem. Solids 33, 1051 (1972).Google Scholar
2. Liang, C., “Conduction Characteristics of the Lithium Iodide-Aluminum Oxide Solid Electrolytes,” J. Electrochem. Soc. 120, 1289 (1973).Google Scholar
3. Jow, T. and Wagner, J. B. Jr., “The Effect of Dispersed Alumina Particles on the Electrical Conductivity of Cuprous Chloride,” J. Electrochem. Soc. 126, No. 11, 196372 (1979).Google Scholar
4. Wagner, J. B. Jr., “Transport in Compounds Containing a Dispersed Second Phase,” Materials Research Bulletin 15, 1691 1701 (1980).Google Scholar
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6. Tare, V. B. and Wagner, J. B. Jr., “Electrical Conduction in Two-Phase Nickel Oxide-Nickel Sulfide Mixtures,” J. Appl. Phys. 54(1), 252-7 (January 1983).Google Scholar
7. Tare, V. B. and Wagner, J. B. Jr., “Electrical Conductivity in Two Phase Nickel-Nickel Oxide Mixtures and Conductivity of Nickel Oxide at the Nickel-Nickel Oxide Phase Boundary,“ J. Appl. Phys. 54, No. 11, 6459-62 (1983).Google Scholar