| 摘要 |
PURPOSE:To provide a novel compd. useful as the title optical functional material, a semiconductor material, a crystal material, etc., by substituting Yb<3+> and Fe<3+> respectively for Tm<3+> and Ga<3+> and Fe<2+> for Zn2+ in the chemical formula of (YbFeO3)nFeO wherein n=1/4. CONSTITUTION:Metallic Tm or thulium oxide or a compd. A to be decomposed into thulium oxide by heating and metallic Ga or gallium oxide or a compd. B to to be decomposed into gallium oxide by heating are prepared. Metallic Zn or zinc oxide or a compd. C to be decomposed into zinc by heating is further prepared. The substances A-C are mixed so that the atomic ratio of Tm, Ga, and Zn is controlled to 1/1/4. The mixture is heated at >=600 deg.C in the atmosphere, in an oxidizing atmosphere, or in the reducing atmosphere wherein the trivalent ions of Tm and Ga and the bivalent ion of Zn are not reduced.
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