Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Microwave dielectric properties of the $0.97MgTiO_3-0.03SrTiO_3$ ceramics with $B_2O_3$

$B_2O_3$첨가에 따른 $0.97MgTiO_3-0.03SrTiO_3$ 세라믹스의 마이크로파 유전특성

  • 남규빈 (광운대학교 전자재료공학과) ;
  • 김지헌 (광운대학교 전자재료공학과) ;
  • 이문기 (한원미이크로웨이브) ;
  • 배선기 (인천대학교 전기공학과) ;
  • 이영희 (광운대학교 전자재료공학과)
  • Published : 2002.11.09
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Abstract

The $0.97MgTiO_3-0.03SrTiO_3$ ceramics with $B_2O_3$(10wt%) were prepared by the conventional mixed oxide method. The structural properties were investigated with sintering temperature by XRD and SEM. According to the X-ray diffraction patterns of the $0.97MgTiO_3-0.03SrTiO_3$ ceramics with $B_2O_3$(10wt%), the ilmenite $MgTiO_3$ and perovskite $SrTiO_3$ structures were coexisted and secondary phase $MgTi_2O_5$ were appeared. Increasing the sintering temperature. the grain size was increased. In the case of $0.97MgTiO_3-0.03SrTiO_3$ ceramics with $B_2O_3$(10wt%), dielectric constant, quality factor and temperature coefficient of resonant frequency were $13.52{\sim}18.13,\;32750{\sim}51736GHz$, $-15.78{\sim}25.64ppm/^{\circ}C$, respectively.

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