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Journal of the Korean Ceramic Society 1982;19(4): 316. |
| $BaTiO_3$의 유전성에 미치는 $Dy_2O_3$의 영향 |
| 윤기현, 송효일 |
| 연세대학교 |
| Effect of $Dy_2O_3$ on Dielectric Properties of Barium Titanate |
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| ABSTRACT |
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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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