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Journal of the Korean Ceramic Society 1985;22(6): 71. |
| 투광성 전기 광학용 소자의 제조에 관한 연구 |
| 김재육, 이태근, 임응극 |
| 서울대학교 공과대학 무기재료공학과 |
| Studies on Fabrication of Translucent Eletrooptic Ceramics |
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| ABSTRACT |
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In order to fabricate the translucent electrooptic ceramics which are comparable to PLZT, $PNZT^*$ has been prepared from aqueous solutions of their itrate and chlorides. In the quarternary $Pb^{1-x} Nd_x(Zr_{0.63} Ti_{0.37})^{1-frac{x}{4}O_3$, (PNZT) $(0.02le xge 0.12)$ system cold-pressed PNZT slugs were sintered in $O_2$ in pt-crucible for 45 min. at 118$0^{circ}C$ and were then heat-treated in air for 60 hrs. at 120$0^{circ}C$ in Al2O3 crucibles containing $PbZrO_3$ powder to control the atmosphere. Mean particle size of calcined PNZT powders was 0.1~0.15${mu}{textrm}{m}$. It was found that the maximum value of optical transmission has been revealed at 6~8 at. % $Nd_2O_3$ added body and that their dielectric constant has been decreased as the frequency increased. Curic temperature has been varied inversely with $Nd^{3+}$ ion content up to 8 at. % and become constant above this value. $^*Pb_{1-x}Nd_x(Zr_{0.63} Ti_{0.37})_{1-2/4}O_3$ |
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