Dielectric Properties of Barium Titanate with <TEX>$Sb_2O_3$</TEX> and ZnO

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J. Korean Ceram. Soc. > Volume 21(2); 1984 > Article

Journal of the Korean Ceramic Society 1984;21(2): 121.

$Sb_2O_3$와 ZnO를 첨가한 Barium Titanate의 유전성

윤기현, 김종우, 송효일

연세대학교 공과대학 요업공학과

Dielectric Properties of Barium Titanate with $Sb_2O_3$ and ZnO

ABSTRACT

The dielectric properties of $BaTiO_3$ containing 0~0.3mol% and ZnO respectively as additives were investigated as a function of temperature from $25^{circ}C$ to 14$0^{circ}C$ and frequency from 24 KHz to 15MHz. The density of sintered $BaTiO_3$ was increased with addition of increasing to 0.15mol% amounts of $Sb_2O_3$ and the dielectric constant was also increased. This is due to space charge polarization with Ba vacancies. Above 0.15mol% $Sb_2O_3$ the density was decreased and the dielectric constant was also decreased due to occuring the discharge through voids. The density of sintered $BaTiO_3$ was decreased with addition of increasing to 0.15mol% amounts of ZnO and the dielectric constant was decreased due to occuring the discharge through voids. Above 0.15mol% ZnO the density was increased and the dielectric constant was also increased,