| 摘要 |
PURPOSE:To obtain the title novel compd. shown by YbGaZn9O12, having a hexagonal lamellar structure, and useful as a optically functional material, a semiconductor material, and a catalyst material. CONSTITUTION:This invention provides a novel compd. wherein Fe<3+> is substituted for Ga<3+> and Fe<2+> for Zn<2+> in the chemical formula of (YbFeO3)nFeO wherein n=1/9. The compd. is stated as Yb<3+>(Ga<3+>Zn<2+>)Zn8<2+>O12<2-> in the ionic crystal models. The structure is formed by the lamination of a YbO1.5 layer, a (Ga<3+>Zn<2+>)2.5 layer, and a ZnO layer, and the compd. has remarkable structure anisotropy. In addition, the 1/9 of the Zna<2+> forms the (Ga<3+>, Zn<2+>)O2.5 layer along with the Ga<3+>, and the remaining 8/9 forms the layer. The face index (hkl), spacing [d(Angstrom )] (do represents a measured value, and dc a calculated value), and relative reflection intensity [I(%)] for X-rays of the compd. are shown in Table 2.
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