| 摘要 |
PURPOSE:To produce the title novel compd., by substituting each In<3+>, Ga<3+>, and (2Zn<2+>+Mg<2+>) for Yb<3+>, Fe<3+>, and Fe<2+>, respectively of a compd. expressed by the chemical formula: (YbFeO3)nFeO wherein (n) is 1/3. CONSTITUTION:(A) Metallic In, In oxide, or a compd. decomposed to In oxide by heating, (B) metallic Ga, Ga oxide, or a compd. decomposed to Ga oxide by heating, (C) metallic Zn, Zn oxide, or a compd. decomposed to Zn oxide by heating, and (D) metallic Mg, Mg oxide, or a compd. decomposed to Mg oxide by heating are mixed in a proportion of In:Ga:Zn:Mg=1:1:2:1 expressed in terms of atomic ratio. The mixture is heated at >=600 deg.C in the atmospheric air, in oxidizing atmosphere, or in reducing atmosphere wherein each In and Ga is not reduced to below tervalent ionic state, and each Zn and Mg is not reduced to below divalent ionic state, to obtain thus the title compd. The obtd. compd. is useful as an optically functional material, semiconductor material, or catalyst.
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