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PURPOSE : A slurry composition is provided to reduce the content of macro particles using abrasive particles in which the shape and size of crystals are controlled and has narrow particle size distribution and to suppress the generation of scratch on an object for polishing.CONSTITUTION : A method for manufacturing a slurry composition for chemical mechanical polishing comprises the steps of : precipitating rare earths metal salts excluding cerium and cerium salts in a water-soluble medium to prepare the precipitate containing rare earths metal and cerium; heat-treating the precipitate to prepare pre-ceria abrasive particles doped with rare earth materials; pulverizing the pre-ceria abrasive particles to prepare ceria abrasive particle; and dispersing the ceria abrasive particle in a water-soluble dispersive medium.COPYRIGHT KIPO 2010