Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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The effects of dopant additions on the NTC thermistor based on Fe$_2$O$_3$

Fe$_2$O$_3$계 NTC thermistor의 첨가물 영향

  • 강희복 (고려대학교 전기공학과) ;
  • 이동희 (고려대학교 전기공학과) ;
  • 김상영 (고려대학교 전기공학과) ;
  • 한성진 (고려대학교 전기공학과) ;
  • 성영권 (고려대학교 전기공학과)
  • Published : 1989.06.01
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Abstract

NTC thermistor was prepared by adding TiO$_2$and MnO$_2$on Fe$_2$O$_3$and the effects of additions were investigated. And the effects of compating pressure, sintering temperature, and sintering time were also experimented. Fe$_2$O$_3$is insulator in stoichiometric state and will be semiconductor by introducing Ti$^{+4}$, Sn$^{+4}$. These semiconducting material will show large negative temperature coeffecients and can be used as NTC thermistor.tor.

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