Patent ID: 7824976

Claim:
A method of manufacturing a semiconductor apparatus comprising: forming a high dielectric constant film on a semiconductor substrate, the high dielectric constant film comprising a film made of a material containing at least one of Hf and Zr, and Si and O, or a film made of a material containing at least one of Hf and Zr, and Si, O and N, forming on the high dielectric constant film an anti-reaction film forming a gate insulation film together with the high dielectric constant film, the anti-reaction film comprising an SiO 2 film, a film made of a material containing SiO 2 as a main component and at least one of Hf and Zr, a film made of a material containing SiO 2 as a main component and N, a film made of a material containing SiO 2 as a main component, Hf and N, a film made of a material containing SiO 2 as a main component, Zr and N, or a film made of a material containing SiO 2 as a main component, Hf, Zr and N, in which when the anti-reaction film contains one of Hf and Zr, a composition ratio of Hf or Zr is less than 1 atom %, when the anti-reaction film contains Hf and Zr, a total composition ratio of Hf and Zr is less than 1 atom %, and when the anti-reaction film contains N, a composition ratio of N is less than 20 atom %, and forming a gate electrode on the anti-reaction film, the gate electrode forming a gate structure together with the gate insulating film.