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Phase Formation and Proton Conduction of La0.6Ba0.4In1-yMyO3-δ(M=Ga3+ , Sc3+, Yb3+) System

La0.6Ba0.4In1-yMyO3-δ(M=Ga3+ , Sc3+, Yb3+)계 조성의 상생성과 Proton 전도

  • Kim, Hye-Lim (Department of Ceramic Engineering, Yonsei University) ;
  • Kim, Shin (Yonsei Center for Clean Technology Institute, Yonsei University) ;
  • Lee, Hong-Lim (Department of Ceramic Engineering, Yonsei University)
  • 김혜림 (연세대학교 세라믹공학과) ;
  • 김신 (연세대학교 CT연구단) ;
  • 이홍림 (연세대학교 세라믹공학과)
  • Published : 2002.06.01

Abstract

Phase formation and proton conduction of L $a_{0.6}$B $a_{0.4}$I $n_{1-y}$ $M_{y}$ $O_{3-{\delta}}$(M=G $a^{3+}$, S $c^{3+}$, Y $b^{3+}$) system were studied. A cubic perovskite structure with a single phase was formed in all of the compositions of this work except for the composition off=G $a^{3+}$ with y=0.5, viz,L $a_{0.6}$B $a_{0.4}$I $n_{1-y}$G $a_{0.5}$ $O_{3-{\delta}}$ For the compositions of M=S $c^{3+}$and Y $b^{3+}$with y=0.25, proton conduction occurred in wet $N_2$ atmosphere(P $h_{H_2O}$=6.1hPa).X>/=6.1hPa).Pa).

Perovskite 구조를 나타내는 L $a_{0.6}$B $a_{0.4}$I $n_{1-y}$ $M_{y}$ $O_{3{\delta}}$(M=G $a^{3+}$ , S $c^{3+}$ , Y $b^{3+}$ )계 조성의 생성상과 proton 전도성을 관찰하였다. G $a^{3+}$ 이온이 25at% 첨가된 조성은 입방정 단일상을 나타낸 반면 50at% 첨가된 조성에서는 입방정상과 이차상이 함께 생성되었다. S $c^{3+}$ 이온 및 Y $b^{3+}$ 이온이 25at%와 50at%씩 첨가된 조성은 모두 입방정 단일상을 나타내었다. 양이온을 25at% 첨가한 조성에 대해 wet $N_2$ 분위기(P $h_{H_2O}$=6.1hPa)에서 전도도를 측정한 결과, S $c^{3+}$ 이온 및 Y $b^{3+}$ 이온이 첨가된 조성은 proton 전도를 나타내었다.

Keywords

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