Patent ID: 7432570

Claim:
A semiconductor device comprising: a substrate; a p-channel MIS transistor formed on an n-type well on the substrate, having a first gate dielectric film formed on the n-type well, and a first gate electrode formed on the first gate dielectric film, the first gate electrode formed of a Ta—C alloy in which a crystal orientation ratio of a TaC (111) face in a film thickness direction of the first gate electrode [TaC (111) face/{TaC (111) face+TaC (200) face}] is 80% or more; and an n-channel MIS transistor formed on a p-type well on the substrate, having a second gate dielectric film formed on the p-type well, and a second gate electrode formed on the second gate dielectric film, the second gate electrode formed of a Ta—C alloy in which a crystal orientation ratio of a TaC (111) face in a film thickness direction of the second gate electrode [TaC (111) face/{TaC (111) face+TaC (200) face}] is 60% or less.