| 摘要 |
PURPOSE:To obtain the title novel compd. shown by LuFeZn9O12, having a hexagonal lamellar structure, and useful as a magnetic material, semiconductor material, a catalyst material, etc. CONSTITUTION:This invention provides a novel compd. wherein Yb<3+> is substituted for Lu<3+> and Fe<2+> for Zn<2+> in the chemical formula of (YbFeO3)nFeO wherein n=1/9. The compd. is stated as Lu<3+>(Fe<3+>Zn<2+>)Zn8<2+>O12<2-> in the ionic crystal models. The structure is formed by the lamination of an LuO1.5 of an LuO1.5 layer, an (Fe, Zn)O2.5 layer, and a ZnO layer, and the compd. has remarkable structural anisotropy. In addition, the 1/9 of the Zn<2+> ion forms the (Fe<3+> Zn<2+>)O2.5 layer along the Fe<3+>, and the remaining 8/9 forms the ZnO 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. |
