| http://www.w3.org/ns/prov#value | - A article according to claim 1, wherein said layer is a pure metal selected from the group consisting of Ag, Au, Cu, Co, Cr, Ni, Sn, Fe, Pt and Zn; an alloy of two or more of these metals, or an alloy of at least one of these metals and a component selected from the group consisting of Mo, W, C, P, S and Si.
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