| 摘要 |
PURPOSE:To provide a novel compd. useful as the title optically functional materia, a semiconductor material, and a catalyst material by substituting Fe<3+> and Fe<2+> respectively for Ga<3+> and Zn<2+> in the chemical formula of (YbFeO3)nFeO wherein n=1/6. CONSTITUTION:Metallic Yb or ytterbium oxide or a compd. A to be decomposed into ytterbium oxide by heating and metallic Ga or galluim oxide or a compd. B to be decomposed into gallium oxide by heating are prepared. Metallic Zn or oxide or a compd. C to be decomposed into zinc oxide by heating is further prepared. The substances A-C are mixed so that the atomic ratio of Yb, Ga, and Zn is controlled to 1/1/6. The mixture is heated at >=650 deg.C in the atmosphere, in an oxidizing atmosphere, or in the reducing atmosphere wherein the trivalent ions of Yb and Ga and the bivalent ion of Zn are not reduced.
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