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J. Korean Ceram. Soc. > Volume 22(6); 1985 > Article
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
ABSTRACT
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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