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A New Phenomenon in Barium‐Lead Titanate Ceramics with Positive Temperature Coefficients of Resistivity
Author(s) -
Kuwabara M.,
Nagata H.
Publication year - 1986
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1986.tb04829.x
Subject(s) - electrical resistivity and conductivity , curie temperature , barium titanate , anomaly (physics) , materials science , condensed matter physics , ceramic , mineralogy , curie , lead titanate , composite material , chemistry , ferroelectricity , physics , dielectric , optoelectronics , quantum mechanics , ferromagnetism
A curious resistivity anomaly in high‐Curie‐point barium‐lead titanate materials with positive temperature coefficients of resistivity (PTCR) has been observed just below the Curie point (∼420°C), besides the normal PTCR anomaly. The additional resistivity anomaly was observed in the resistivity‐temperature characteristics, especially on cooling, and shewed a significant dependence on the cooling rate.