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Preparation of High-Conductive High-Temperature PTC Resistor Ba1-x SrxPb1+yO3+z

Published online by Cambridge University Press:  15 February 2011

H. Nagamoto ,
H. Kagotani  and
T. Koya
H. Nagamoto
Affiliation:
The University of Tokyo, Engineering Research Institute, 2-11-16, Yayoi, Bunkyo-ku, Tokyo 113, Japan.
H. Kagotani
Affiliation:
The University of Tokyo, Engineering Research Institute, 2-11-16, Yayoi, Bunkyo-ku, Tokyo 113, Japan.
T. Koya
Affiliation:
Ebara Corporation, Nuclcar Engineering Division, 4-2-1, Honfujisawa, Fujisawa 251, Japan.
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Abstract

The positive temperature coefficient of resistivity (PTCR) effect in Ba1-xSrxPb1+yO3+z has been systematically studied. The effect of the PTC resistivity was strongly influenced by the preparation condition. The PTCR effect in metallic-conducting BaPb1+yO3+z. is confirmed around 700 °C, and the temperature where the PTCR effect starts can be successfully shifted to higher temperature range by substituting strontium for the A-site barium. The magnitude of the PTCR effect was increased and the resistibility was reduced by the enhancement of the sintering. In addition to Pb(IV) in the perovskite structure, Pb(II) is detected at the grain boundary in the sintered body.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 290: Symposium N – Dynamics in Small Confining Systems , 1992 , 239
Copyright
Copyright © Materials Research Society 1993

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