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La(Ba)$ScO_3$계 Perovskite의 생성상 및 Proton 전도
이규형,김혜림,김신,이형직,이홍림,Lee, Kyu-Hyoung,Kim, Hyu-Lim,Kim, Shin,Lee, Hyung-Jik,Lee, Hong-Lim 한국세라믹학회 2001 한국세라믹학회지 Vol.38 No.11
Bao를 첨가한 perovskite 구조 LaSc $O_3$의 생성상과 proton 전도에 대해 연구하였다. La자리에 $Ba^{2+}$를 40 at% 첨가한 조성에서는 입방정 단일상이 생성된 반면, $Ba^{2+}$를 30 at% 이하로 첨가한 조성은 입방정과 사방정이 생성되었다. $N_2$분위기에서 $650^{\circ}C$ 이상의 온도에서는 주로 산소이온에 의한 전도를 나타내었고, 그 이하의 온도에서는 wet 분위기에서 proton 전도가 관찰되었다. 모든 조성의 물질은 30$0^{\circ}C$ 이하에서는 순수한 proton 전도체의 거동을 보였으며, proton에 의한 bulk(grain)의 전도도는 L $a_{0.6}$B $a_{0.4}$Sc $O_{2.8}$의 경우에 가장 높았다.높았다.다. Phase formation and proton conduction in BaO doped LaSc $O_3$with perovskite structure were studied. L $a_{0.6}$B $a_{0.4}$Sc $O_{2.8}$, viz. 40at% $Ba^{2+}$ ion doped composition, showed a single cubic phase, while the other compositions doped less than 30 at% $Ba^{2+}$ ion showed the cubic phase and the orthorhombic one. Above $650^{\circ}C$ oxygen ion conduction was dominant in $N_2$atmosphere and below this temperature proton conduction was observed in wet atmosphere. All compositions were found to be the pure proton conductors below 30$0^{\circ}C$. The proton conductivity (bulk) of L $a_{0.6}$B $a_{0.4}$Sc $O_{2.8}$ was higher than those of any other composition.osition.ion.
이규형 한국스포츠리서치 2001 한국 스포츠 리서치 Vol.12 No.4
I studied on the Artistic Meaning Research and Philosophy of Taekwondo Demonstration. The Conclusion is as followed : First, after having studied the Artistic meaning of Taekwondo Demonstration, it is considered that the Artistic Meaning of Taekwondo Demonstration represents the historical background and training experience as an art and that the artistic nature of its beauty is the aesthetic experience only Taekwondo can have. Second, the study of Philosophy of Taekwondo Demonstration shows that the Meaning of Philosophy of Taekwondo Demonstration contains the essence and the philosophy which makes Taewondo a true Taekwondo itself. As for the expression of the inside and outside of Taekwondo Demonstration, it has two principles. One, a profound thought in respect of the great absolute in spiritual, and two, the movement of expression of a beautiful arts around the beautiful body, in the arts of physical activity.