Structural & electrical properties of PbTi${O}_{3}$ system as a function of Mn${O}_{2}$ addition

Mn${O}_{2}$ 첨가에 따른 $PbTiO_3$계 세라믹스의 구조적, 전기적 특성

  • 홍재일 (대유공업전문대 전기과) ;
  • 유주현 (세명대 공대 전기공학과) ;
  • 윤현상 (연세대 대학원 전기공학과) ;
  • 윤광희 (연세대 대학원 전기공학과) ;
  • 장낙원 (연세대 대학원 전기공학과) ;
  • 박창엽 (연세대 공대 전기공학과)
  • Published : 1995.11.01

Abstract

In this study, the structural, electrical and dielectric properties were investigated in (P $b_{0.76}$ $Ca_{0.24}$)[( $Co_{1}$2/ $W_{1}$2/)$_{0.04}$ $Ti_{0.96}$) $O_{3}$ system ceramics which were manufactured with the addition of Mn $O_{2}$. According to the increment of Mn $O_{2}$ addition, tetragonality was decreased. The specimen added with 1.5 mol% Mn $O_{2}$ and sintered at 1150.deg. C showed the highest density of 7.06[g/c $m^{3}$]. The variations of grain xize as a function of Mn $O_{2}$ addition were negligibly small. But grain was grown until 7.88[.mu.m] with increasing sintering temperature. Electromechamical coupling factor planar mode $K_{p}$ was decreased to a small value of $K_{p}$ = 0 in all the specimens added with Mn $O_{2}$ and sintered at 1150.deg. C & 1200.deg. C.& 1200.deg. C.

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