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Thermochemistry and electrical contact properties at the interface between semiconducting BaTiO3 and (Au–Ti) electrodes

Published online by Cambridge University Press:  31 January 2011

David P. Cann  and
Clive A. Randall
David P. Cann
Affiliation:
The Center for Dielectric Studies, The Pennsylvania State University, University Park, Pennsylvania 16802
Clive A. Randall
Affiliation:
The Center for Dielectric Studies, The Pennsylvania State University, University Park, Pennsylvania 16802
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Abstract

The interfacial characteristics of positive temperature coefficient of resistance (PTCR) BaTiO3-electrode interfaces were studied. Sessile drop wetting experiments in combination with measurements of the contact resistance of the interface were used to establish a fundamental perspective of the electrode-ceramic interface. It was shown that the thermodynamic work of adhesion Wad), which is the sum of the strengths of chemical interactions present at the interface, can be manipulated by the addition of chemically active elements to the electrode metal which enhance adhesion. This same procedure is shown to modify the important electrical interfacial properties such as the contact resistance.

Type
Articles
Information
Journal of Materials Research , Volume 12 , Issue 7 , July 1997 , pp. 1685 - 1688
Copyright
Copyright © Materials Research Society 1997

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