| 摘要 |
PROBLEM TO BE SOLVED: To uniformly disperse fine powder, particularly to decrease the particle diameter and to increase dispersibility to cope with the miniaturization and the high performance of an electronic component. SOLUTION: A rare earth oxide is produced by using a reaction mixture composed of a rare earth metallic salt, an organic thionic acid salt, urea and water or a reaction mixture in which a transition metal salt is added further as a starting material to form a nanotube structured, hexagonal structured or lamellar rare earth oxide combined body, firing at a temperature at which the organic thionic acid group or the substituted anionic group is decomposed to form the rare earth oxide or the rare earth oxide doped with a metal contributing to light emitting characteristic. COPYRIGHT: (C)2004,JPO
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