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http://dx.doi.org/10.3740/MRSK.2004.14.2.115

Effects of Sb2O3 on the PTCR Properties of (Ba,Sr)TiO3-based Ceramics  

Lee Ho-Won (고려전자(주) 소재개발과)
Kim Young-Min (고려전자(주) 소재개발과)
Ur Soon-Chul (충주대학교 신소재공학과/나노기술연구소)
Kim Il-Ho (충주대학교 신소재공학과/나노기술연구소)
Publication Information
Korean Journal of Materials Research / v.14, no.2, 2004 , pp. 115-120 More about this Journal
Abstract
Perovskite barium-strontium titanate, $(Ba, Sr)TiO_3$ was prepared and effects of $Sb_2$O$_3$ additives on its PTCR properties were investigated. $The (Ba,Sr)TiO_3$ with 0.05～0.25 mol% $Sb_2$$O_3$ showed semiconducting PTCR behavior and anomalous grain growth was also observed when it was sintered above $1330^{\circ}C$. It was considered that charge compensation by doping 8b203 as well as abnormal grain growth by sintering lead to resistivity reduction from insulating to semiconducting transition.
Keywords
PTCR; (Ba,Sr)$TiO_3$;
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