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Effects of Surface Defects on the Local Electric Field in Inhomogeneous Media

Published online by Cambridge University Press:  01 January 1992

Kim F. Ferris  and
Steven M. Risser
Kim F. Ferris
Affiliation:
Materials Science Department, Pacific Northwest Laboratory, Richland, WA 99352
Steven M. Risser
Affiliation:
Materials Science Department, Pacific Northwest Laboratory, Richland, WA 99352
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Abstract

Surface defects both focus the local electric field and enhance its intensity in the vicinity of the defect. Using a finite element model of an inhomogeneous dielectric film, we have examined the relationship between the defect shape and local electric field in the film and defect. We find that raised defect regions that are peaked have the largest local fields while the slope of removed regions has little effect on the field in raised defects. Both peaked and flat surface defects can lead to large enhancements of the local electric field above that predicted by effective medium approximation (EMA) methods.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 291: Symposium O – Materials Theory and Modeling , 1992 , 521
Copyright
Copyright © Materials Research Society 1993

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References

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