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J. Korean Ceram. Soc. > Volume 19(4); 1982 > Article
Journal of the Korean Ceramic Society 1982;19(4): 316.
$BaTiO_3$의 유전성에 미치는 $Dy_2O_3$의 영향
윤기현, 송효일
Effect of $Dy_2O_3$ on Dielectric Properties of Barium Titanate
The effect of the additive on dielectric properties of $BaTiO_3$ containing 0.030 mol% $Dy_2O_3$ was investigated function of frequency from 5$times$104 to 0.3$times$107cps and temperature from 25 to 1$25^{circ}C$. The dielectric constant increased with increasing $Dy_2O_3$ concentration from 0 to 0.05mol% due to space charge polarization. However, the dielectric constant decreased for further increase of $Dy_2O_3$ concentration due to density increase. The dielectric constant exhibits rapid change at the Curie temperature and the Curie temperature drops from 122 to 116$^{circ}C$ with increasing amount of $Dy_2O_3$ concentration.
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