Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Dielectric Properties of Non-reducible X7R Dielectric Materials in $BaTiO_3$-$Er_2$$O_3$--MgO

$BaTiO_3$-$Er_2$$O_3$-MgO 첨가계를 이용한 내환원성 X7R 재질의 유전특성에 관한 연구

  • 한영호 (성균관대학교 재료공학과) ;
  • 최상근 (성균관대학교 재료공학과) ;
  • 황진현 (성균관대학교 재료공학과)
  • Published : 2001.07.01
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Abstract

E $r_2$ $O_3$-MgO 복합 첨가가 BaTi $O_3$계 내환원성 X7R 재질의 유전특성에 미치는 영향에 대하여 환원성 분위기에서 연구하였다. (B $a_{1-x}$ E $r_{x}$)( $Ti_{1-y}$M $g_{y}$ ) $O_3$첨가계에서 1.0 mol% 이상 MgO의 복합첨가로 E $r_{Ba}$ 도너 불순물과 $Mg_{Ti}$ 억셉터 불순물이 전기적으로 보상되어, 환원성분위기 소결 후에도 $10^{10}$Ωcm 이상의 높은 절연저항을 나타내었다. E $r_2$ $O_3$가 첨가된 시편에서 MgO가 2.0 mol% 이상 첨가될 경우, 유전율의 온도안정성이 향상되어 X7R 규격을 만족시켰으며 1.0$mu extrm{m}$ 이하의 작고 균일한 입자가 관찰되었다. 한편, E $r_2$ $O_3$의 첨가량이 3.0 mol%로 증가함에 따라 유전율의 온도안정성이 향상되었으나 상대적으로 상온 유전상수값이 현저히 감소하였다.였다.다.

Keywords

References

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