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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Capacitive-Voltage properties of$(Sr{\cdot}Ca)TiO_{3}$ Ceramics

$(Sr{\cdot}Ca)TiO_{3}$ 세라믹스의 용량-전압 특성

  • 강재훈 (대불대학교 전기공학과) ;
  • 최운식 (대불대학교 전기공학과) ;
  • 김충혁 (광운대학교 전기공학과) ;
  • 김진사 (광운대학교 전기공학과) ;
  • 박용필 (동신대학교 전기전자공학부) ;
  • 송민종 (광주보건대학 의료정보공학부)
  • Published : 2001.11.08
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Abstract

In this study, the capacitance-voltage properties of $(Sr_{1-x}\cdot Ca_x)TiO_3(0.05{\leq}x{\leq}0.20)$-based grain boundary layer ceramics were investigated. The ceramics were fabricated by the conventional mixed oxide method. The sintering temperature and time were $1480\sim1500^{\circ}C$ and 4 hours. respectively. The 2nd phase formed by the thermal diffusion of CuO from the surface leads to very excellent dielectric properties, that is, ${\varepsilon}_r$ >50000, tan$\delta$ <0.05, ${\Delta}C$ < ${\pm}10%.$ The capacitance is almost unchanged below about 20[V] but it decreases slowly about 20[V]. The results of the capacitance-voltage properties indicated that the grain boundary was composed of the continuous insulating layers.

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