| http://www.w3.org/ns/prov#value | - More particularly, the fourth conductor layer 40 may be given by Ti, Zr, Hf, V, Nb, Ta, Mo, W, Co, Ni, Cr, or an alloy including at least two metals selected from the above except for Ti-W. Alternatively, it may also be of silicon compounds, nitrogen compounds, or boron compounds including a metal or an alloy selected from Ti, Zr, Hf, V, Nb, Ta, Mo, W, Co, Cr, and Ni.
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