| 摘要 |
PURPOSE:To prepare a novel compound represented by YFeMnO4 and having hexagonal lamellar structure, by mixing Y2O3, MnO and Fe2O3 at specific molar ratios, and heating the mixture in a non-oxidizing atmosphere at or above a specific temperature. CONSTITUTION:Powdery Y2O3 of >=99.9% purity, powdery MnO of >=99.9% purity and powdery Fe2O3 of >=99.9% purity are mixed together at molar ratios of about 1:2:1. The mixture is put into a transparent quartz tube, and the tube is evacuated with a vaccum pump. filled with non-oxidizing gas, and sealed with a gas burner. The tube is inserted into a ''Siliconit '' furnace maintained at >=900 deg.C, heated for about 1 day, and the specimen is taken out of the tube. |
