Patent ID: 7244168

Claim:
A method for processing a substrate having a conductive material and a barrier material formed thereon, comprising: polishing the conductive material, wherein the polishing the conductive material comprises: positioning the substrate in a polishing apparatus having a rotational carrier head and a rotatable platen, wherein the substrate is disposed in the rotational carrier head and the platen has a polishing article disposed thereon, rotating the carrier head at a first carrier head rotational rate and rotating the platen at a first platen rotational rate, polishing the substrate with the polishing article, accelerating the first carrier head rotational rate to a second carrier head rotational rate and accelerating the first platen rotational rate to a second platen rotational rate, and removing the conductive material from the substrate; and polishing the barrier material, wherein the polishing the barrier material comprises: rotating the carrier head at the first carrier head rotational rate and rotating the platen at the first platen rotational rate, polishing the substrate with the polishing article, accelerating the first carrier head rotational rate to the second carrier head rotational rate and accelerating the first platen rotational rate to the second platen rotational rate, and removing the barrier material from the substrate.