Patent ID: 7513920

Claim:
A slurry composition for chemical-mechanical polishing a substrate, said slurry composition comprising: a) a fluid comprising water and at least one oxidizing compound that produces free radicals when contacted with an activator, and wherein the fluid pH is between about 2 to about 8; and b) a plurality of abrasive particles having a surface comprising: i) a stabilizer selected from borate, tungstate, aluminate, phosphoric acid, pyrophosphoric acid. stannate, a silanol, and mixtures thereof, wherein if the particle is alumina then the stabilizer is not aluminate; wherein the stabilizer is bonded to said surface and ii) at least one activator selected from ions or compounds of Ce, Cu, Fe, and mixtures thereof disposed on said surface, wherein said activator metal is present in an amount between about 0.2 ppm and 12 ppm based on the weight of the slurry.