Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Effects of Sb2O3 on the PTCR Properties of (Ba,Sr)TiO3-based Ceramics

(Ba,Sr)TiO3계 세라믹스의 PTCR 특성에 미치는 Sb2O3의 영향

  • 이호원 (고려전자(주) 소재개발과) ;
  • 김영민 (고려전자(주) 소재개발과) ;
  • 어순철 (충주대학교 신소재공학과/나노기술연구소) ;
  • 김일호 (충주대학교 신소재공학과/나노기술연구소)
  • Published : 2004.02.01
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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.

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