Some Crystallographic, Electric and Thermochemical Properties of the Perovskite-Type La_<1-x>M_xNiO_3(M: Ca, Sr and Ba)

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概要

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• The perovskite-type compounds La_<1-x>M_xNiO_3 (M: Ca, Sr and Ba) were synthesized and their crystallographic, electric and thermochemical properties were investigated. The regions of perovskite formation were determined. The solubility limits or alkaline earth elements into La sites are around 5% for Sr and Ba, and less than 1 % for Ca. The charge compensation of divalent ion substitution into a trivalent La ion site takes place by the formation of oxygen ion vacancies. Lanthanoid elements other than La did not form perovskite-type oxides. The compound LaNiO_3 undergoes a rhombohedral-cubic transition at 940℃ and decomposes above 1120℃. Resistivity of LaNiO_3 is 9×10^<-3> Ωcm at room temperature and increases as the temperature is raised.

• 社団法人応用物理学会の論文
• 1975-03-05

著者

• Kudo Tetsuichi

  Central Research Laboratory Hitachi Ltd.

• Obayashi Hidehito

  Central Research Laboratory Hitachi Ltd.

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