Preparation of Heterometallic Oxide Using the Thermal Decomposition of Ce Containing Heteronuclear Complex, Ln(1+x)Ce_x(Co(CN)_6) centre dot nH_2O(Ln=La,Pr)

摘要

Perovskite-type oxides of Ln_(1-x)Ce_xCoO_3(Ln=La,Pr) were prepared by thermal decomposition of Ce containing heteronuclear complex Ln_(1-x)Ce_x(Co(CH)_61) centre dot nH_2O at 700 deg C. Mixed phase of the perovskite-type material, CeO_2 and Co_3O_4 was obtained for the decomposed materials. The lattice constants for the perovskite-type phase slightly increased with an increase in X value for both the decomposed samples. The partial Ce~(4+) ions substituted to La~(3+) sites in the perovskite-type materials. On the other hand, mixed phase containing the perovskite-type oxides was formed by the sintering above 900 deg C for conventional solid-state reaction method.