Title :
The thermochemistry and non-Ohmic electrical contacts of a BaTiO 3 PTCR ceramic
Author :
Cann, David P. ; Randall, Clive A.
Author_Institution :
Center for Dielectric Studies, Pennsylvania State Univ., University Park, PA, USA
Abstract :
In this investigation we establish link between electrode-semiconducting oxide adhesion characteristics and the electronic characteristics. For a number of metal electrodes we relate the non-Ohmic contact resistance thermodynamic work of adhesion. Thermodynamic work of adhesion is determined metal cation-metal atom interactions and the atom-oxygen interactions, and compared to drop wetting experiments. The non-Ohmic contacts are characterized by impedance spectroscopy methods to separate grain, grain boundary, and electrode contact resistance
Keywords :
adhesion; barium compounds; ceramics; contact resistance; semiconductor-metal boundaries; thermistors; thermochemistry; wetting; BaTiO3; BaTiO3 PTCR ceramic; drop wetting; electronic characteristics; grain boundary; impedance spectroscopy; metal electrode-semiconducting oxide adhesion; nonOhmic contact resistance; thermochemistry; thermodynamic work of adhesion; Adhesives; Barium; Ceramics; Chemicals; Contact resistance; Electrodes; Ohmic contacts; Temperature sensors; Thermodynamics; Titanium compounds;
Conference_Titel :
Applications of Ferroelectrics, 1996. ISAF '96., Proceedings of the Tenth IEEE International Symposium on
Conference_Location :
East Brunswick, NJ
Print_ISBN :
0-7803-3355-1
DOI :
10.1109/ISAF.1996.602749
