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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Microwave Dielectric Properties of the MgTiO$_3$-SrTiO$_3$Ceramics

MgTiO$_3$-SrTiO$_3$세라믹스의 마이크로파 유전특성

  • 최의선 (광운대학교 전자재료공학과) ;
  • 이문기 (광운대학교 전자재료공학과) ;
  • 정장호 ((주)한원 마이크로웨이브) ;
  • 김강 (춘천기능대학 전자과) ;
  • 이영희 (광운대학교 전자재료공학과)
  • Published : 2000.07.01
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Abstract

The (1-x)MgTiO$_3$-xSrTiO$_3$(x=0.02∼0.08) ceramics were fabricated by conventional mixed oxide method. The sintering temperature and time were 1250$^{\circ}C$∼1400$^{\circ}C$, 2hr., respectively. The structural and microwave dielectric properties were investigated by varying sintering temperature and composition ratio. In the (1-x)MgTiO$_3$-xSrTiO$_3$(x=0.02) ceramics, the cubic SrTiO$_3$and hexagonal MgTiO$_3$phases were coexisted. The dielectric constant was increased and the temperature coefficient of resonant frequency( $\tau_f$) was decreased with addition of SrTiO$_3$. The temperature coefficient of resonant frequency($\tau_f$) was gradually varied from negative value to positive value with increasing the SrTiO$_3$.

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