| http://www.w3.org/ns/prov#value | - In the semiconductor device 1, on the other hand, the results of experiments and studies indicate that even if such materials as Al are used for the gate electrode 15, the presence of the second insulating film 142 enables threshold voltage reduction since it is doped with metal ions such as Ti, Zr, Hf, Si, or Pr which have a valence numb
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