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A Study of the Volume Fraction, temperature and Pressure Dependence of the Resistivity in a Ceramic–Polymer Composite using a General Effective media Equation

Published online by Cambridge University Press:  28 February 2011

David S. McLachlan ,
Michael Blaszkiewics ,
Shoko Yoshikawa  and
Robert E. Newnham
David S. McLachlan
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park Pa 16802
Michael Blaszkiewics
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park Pa 16802
Shoko Yoshikawa
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park Pa 16802
Robert E. Newnham
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park Pa 16802
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Abstract

A General Effective Media (GEM) equation is used to quantitatively describe the resistivity of an Fe304-eccogel composite system as a function of the relative volume fractions. The two percolation morphology parameters (øc and t) characterise the microstructure. Preliminary models, also based on the GEM equation, are used to describe the positive temperature coefficient of resistivity (PTC) and the piezoresistivity (uniaxial pressure) of the composite when the composition is near the percolation threshold.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 195: Symposium S – Physical Phenomena in Granular Materials , 1990 , 147
Copyright
Copyright © Materials Research Society 1990

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References

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