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Proceedings Paper

Influence of Ca on electric properties of Ba1-xCaxTi1.02O3 PTC ceramics with low room-temperature resistivity
Author(s): Minghe Cao; Dong-xiang Zhou; Shuping Gong
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Paper Abstract

The PTC thermistors with super-low resistivity less than 10(Omega) (DOT) cm were prepared using (Ba1-xCax)Ti1.02O34/ as material by conventional routine. The effect of Ca content on the room temperature resistivity and electronic properties on Sb(subscript 2O3, Nb2O5- codoped Ba1-xCaxTi1.02O3 ceramics has been investigated. When the concentration of Ca was lower than 8.0% mol, the room temperature resistivity as well as Rmax/Rmin are reduced and the ranging of Curie point (Tc) is widened with increasing of the concentration of Ca. As the concentration of Ca is beyond 8.0%mol, the room temperature resistivity increasing abruptly with increasing of the content of Ca.

Paper Details

Date Published: 9 May 2000
PDF: 4 pages
Proc. SPIE 4077, International Conference on Sensors and Control Techniques (ICSC 2000), (9 May 2000); doi: 10.1117/12.385523
Show Author Affiliations
Minghe Cao, Huazhong Univ. of Science and Technology (China)
Dong-xiang Zhou, Huazhong Univ. of Science and Technology (China)
Shuping Gong, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 4077:
International Conference on Sensors and Control Techniques (ICSC 2000)
Desheng Jiang; Anbo Wang, Editor(s)

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