Effect of Electric-Field-Induced Polarization on Positive Temperature Coefficient of Resistivity Characteristics of Semiconducting Barium Titanate Ceramics

2001 ◽  
Vol 40 (Part 2, No. 11A) ◽  
pp. L1163-L1165 ◽  
Author(s):  
Kouichi Hamamoto ◽  
Makoto Kuwabara
Keyword(s):  
Barium Titanate ◽  
Electric Field ◽  
Temperature Coefficient ◽  
Positive Temperature Coefficient ◽  
Induced Polarization ◽  
Positive Temperature ◽  
Temperature Coefficient Of Resistivity ◽  
Titanate Ceramics

Electrical breakdown of the positive temperature coefficient of resistivity barium titanate ceramics

1996 ◽  
Vol 11 (8) ◽  
pp. 2002-2008 ◽  
Author(s):  
Duk-Hee Kim ◽  
Woo-Sik Um ◽  
Ho-Gi Kim
Keyword(s):  
Barium Titanate ◽  
Temperature Coefficient ◽  
Applied Voltage ◽  
Electrical Breakdown ◽  
Positive Temperature Coefficient ◽  
Positive Temperature ◽  
Three Samples ◽  
Barium Titanate Ceramic ◽  
Temperature Coefficient Of Resistivity ◽  
Titanate Ceramics

Positive temperature coefficient of resistivity barium titanate ceramic is a semiconductor at room temperature, so it is self-heated under certain applied voltage, and then changes into an insulator. The electrical breakdown has been investigated with the resistance-temperature characteristics of the three samples which have different compositions. The grain size effect on the breakdown voltage also is discussed. As the applied voltage increased, the electrical breakdown was initiated when the specimen interior was heated above the temperature corresponding to the maximum resistance on the resistance-temperature curves by joule heat.

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