Patent ID: 10899945

Abstract:
Use of a chemical mechanical polishing (CMP) composition (Q) for chemical mechanical polishing of a substrate (S) comprising (i) cobalt and/or (ii) a cobalt alloy and (iii) Ti N and/or TaN, wherein the CMP composition (Q) comprises (E) Inorganic particles (F) at least one organic compound comprising an amino-group and an acid group (Y), wherein said compound comprises n amino groups and at least n+1 acidic protons, wherein n is a integer≥1. (G) at least one oxidizer in an amount of from 0.2 to 2.5 wt.-% based on the total weight of the respective CMP composition, (H) an aqueous medium wherein the CMP composition (Q) has a pH of more than 6 and less than 9.