Patent ID: 7419911

Claim:
A method for etching and/or chemically mechanically polishing an overfilled substrate having at least a first relatively conductive, metal-containing layer material disposed over a relatively non-conductive layer, which method comprises the steps of: providing a polishing or etching composition capable of polishing, etching, and/or removing the metal-containing layer material at a removal rate of about 10 microns/minute to about 45 microns/minute wherein the composition comprises: from about 0.1% to about 30% by weight of an oxidizer selected from the group consisting of a peroxide, periodic acid, peracetic acid, ammonium persulfate, hydroxylantine, a hydroxylamine derivative, a hydroxylamine salt, a hydroxylamine derivative salt, or a combination thereof; a majority of a diluent; and optionally from about 0.1% to about 30% by weight of an abrasive; and movably contacting the polishing or etching composition with the substrate under conditions where at least a portion of the first metal-containing layer is removed to form first regions of material having substantially the same composition as said metal-containing layer on a surface of the substrate, and optionally form second regions of material having substantially the same composition as said relatively non-conductive layer on a surface of the substrate.