Crystal structure of perovskite type CeGaO3 synthesized by arc- and skull- melting methods

Toetsu Shishido, Zheng Yutong, Hiroyuki Horiuchi, Akira Yoshikawa, Syoichi Hosoya, Shin Ichiro Tozawa, Akihiro Saito, Masahiko Tanaka, Tsuguo Fukuda

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Crystalline phase of CeGaO3 has been successfully synthesized by two kinds of methods; arc- and skull- melting methods. In the case of arc -melting method, CeGaO3 is finally obtained by a reaction of Ce2O3 and Ga2O3, where, Ce2O3 is produced by a "thermal effect on the reduction" from the source CeO2 in the first reaction stage. On the other hand, in the case of skull-melting method, CeGaO3 is obtained by a "direct reduction" of Ga2O3 by Ce. Both crystallographic data on CeGaO3 obtained by two methods are consistent. The structure belongs to tetragonal system with space group, P4/mmm, which is different from cubic system as reported in literatures. Lattice constants are a=0.3873(1)nm, c=0.3880(1)nm, V=0.5819(3) × 10-28 m3, Z=1. This compound is unstable at high temperature in air and decomposes to CeO2 and Ga2O3 by heating up to 1250 °C.

Original languageEnglish
Pages (from-to)993-994
Number of pages2
JournalNippon Kagaku Kaishi / Chemical Society of Japan - Chemistry and Industrial Chemistry Journal
Issue number11
Publication statusPublished - 1996
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)


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