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 $0.98MgTiO_3-0.02BaTiO_3$ Ceramics with Sintering Temperature

소결온도에 따른 $0.98MgTiO_3-0.02BaTiO_3$ 세라믹스의 마이크로파 유전특성

  • 최의선 (광운대학교 전자재료공학과) ;
  • 이문기 (광운대학교 전자재료공학과) ;
  • 이성갑 (서남대학교 전기전자공학과) ;
  • 배선기 (인천대학교 전기공학과) ;
  • 이영희 (광운대학교 전자재료공학과)
  • Published : 2001.05.11
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Abstract

The $0.98MgTiO_3-0.02BaTiO_3$ ceramics were prepared by the conventional mixed oxide method. The structural properties were investigated with sintering temperature and composition ratio by XRD, SEM and EDS. According to the X-ray diffraction patterns of the $0.98MgTiO_3-0.02BaTiO_3$ ceramics, the hexagonal $BaMg_6Ti_6O_{19}$ and ilmenite $MgTiO_3$ structures were coexisted. The dielectric constant$({\varepsilin}_r)$ and quality factor$(Q{\times}f_r)$ were decreased with increasing the sintering temperature in the range of $1275^{\circ}C{\sim}1350^{\circ}C$. In the case of the $0.98MgTiO_3-0.02BaTiO_3$ ceramics sintered at $1275^{\circ}C$, dielectric constant, quality factor and temperature coefficient of resonant frequency were 20.27, 76,845, $-46.6ppm/^{\circ}C$, respectively.

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