RARE EARTH METAL COMPOUND IN AQUEOUS SOLVENT, METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING CERAMIC POWDER USING SAME

摘要

conventional rare earth metal compounds because the organic sol sol , the manufacturing and explosion-proof equipment is required in the use haejyeoseo , the production cost has been difficult to a low value . ; can be defined in Claim 1 of the present invention the solvent is a carboxylic acid and a rare earth metal compound sols having a carbonyl group at least 03 ( ) Sc, Y, La , Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, the molar ratio of the rare-earth metal and of at least one selected from Lu ( carbonyl group / rare earth metal ) in a relation of 1.2 to 3 rare earth metal compounds that meet this and dispersed in the water .