Patent ID: 8508018

Claim:
A device comprising; a substrate having a layer of dielectric material on a surface of the substrate, the dielectric material having a feature formed therein, wherein the feature is a depression in the dielectric material, wherein the feature has at least one side wall and the side wall of the feature is coated with a barrier layer, wherein the barrier layer is comprised of a metal selected from the group consisting of Pt, Ir, Pd, Re, and Rh, and a substance selected from the group consisting of Mn, Mg, MgB 2 , P, B, Al, and Co, wherein the substance is present in the barrier layer in an amount from 1 to 10 atomic weight percent of the metal that is selected from the group consisting of Pt, Ir, Pd, Re, and Rh, wherein the feature contains copper, and wherein the barrier layer is between the copper and the dielectric material, wherein the feature does not comprise a layer comprising Ti, Ta, or W between the copper and the dielectric material.