Media-low Temperature Sintered Y-BaTiO3 Ceramics Modified by B2O3 Vapor and Its PTCR Effect

Abstract

Abstract: Media-low temperature sintering technique is- widely used for the fabrication of BaTiO₃ based ceramics. The sintering temperature of BaTiO₃-based ceramics will be decreased greatly through the doping of B₂O₃ vapor. Doping with B₂O₃ vapor results in the sample with low room temperature resistivity and high resistance jump relatively. It is revealed that boron interstitial can exist in the grain lattice of BaTiO₃. The boron interstitial or/and its complex can form electron capture center and enhance the PTCR effect of the sample.

Key words: B₂O₃, BaTiO₃, PTCR, Vapor doping, Low temperature sintering

CLC Number:

TN304

QI Jian-Quan,LI Long-Tu,FAN Yi-Wei,WANG Yong-Li,GUI Zhi-Lun. Media-low Temperature Sintered Y-BaTiO₃ Ceramics Modified by B₂O₃ Vapor and Its PTCR Effect[J]. Journal of Inorganic Materials.

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Media-low Temperature Sintered Y-BaTiO₃ Ceramics Modified by B₂O₃ Vapor and Its PTCR Effect

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