Phase Formation and Oxygen Ion Conduction of <TEX>$La(Ba)Ga(Mg)O_3_delta$</TEX> Perovskite Oxide System

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J. Korean Ceram. Soc. > Volume 36(10); 1999 > Article

Journal of the Korean Ceramic Society 1999;36(10): 1056.

$La(Ba)Ga(Mg)O_3_delta$계 Perovskite 산화물의 생성상 및 산소이온전도

이기태, 김신¹, 이홍림

연세대학교 세라믹공학과
¹연세대학교 산업기술연구소

Phase Formation and Oxygen Ion Conduction of $La(Ba)Ga(Mg)O_3_delta$ Perovskite Oxide System

ABSTRACT

Phase formation and oxygen ion conduction of La(Ba)Ga(Mg)O3-$delta$ system was studied, BaLaGa3O7 and BaLaGaO4 formed as a secondary phase above the solubility limit of Ba2+ in La3+ sites. The oxygen ionic conductivity of La(Ba)Ga(Mg)O3-$delta$ was 0.1 S/cm 80$0^{circ}C$ The activation energy of the oxygen ion conduction was dependent on temperature. This value was higher at low temperature than at high temperature.

Key words: Oxygen ion conduction, $La(Ba)Ga(Mg)O_3_\delta$system, Secondary phase, Activation energy