Title of article
TiCl3-doped Ba0.92Ca0.08TiO3 positive temperature coefficient resistance ceramics with low room temperature resistivity
Author/Authors
Cao، نويسنده , , Minghe and Zhou، نويسنده , , Dongxiang and Gong، نويسنده , , Shuping and Hu، نويسنده , , Yunxiang and Cao، نويسنده , , Mingli، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2002
Pages
5
From page
35
To page
39
Abstract
The influence of TiCl3 solution on the room temperature resistivity and the electrical properties of Ba0.92Ca0.08TiO3 positive temperature coefficient resistance (PTCR) ceramics were studied. The results indicate that the PTC effect can be improved significantly when an appropriate amount of TiCl3 in solution is added to the raw materials. The carrier concentration (Nd), the surface charge density (Ns), and the barrier height at grain boundaries (φ) were calculated by AC complex impedance analysis. The segregation of Ti3+ at the grain boundaries is believed to have enhanced the PTC effect.
Keywords
Low resistivity , Positive temperature coefficient , Surface charge density , Potential barrier height
Journal title
MATERIALS SCIENCE & ENGINEERING: B
Serial Year
2002
Journal title
MATERIALS SCIENCE & ENGINEERING: B
Record number
2137861
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