Patent ID: 7867847

Claim:
A method of manufacturing a dielectric film including a metallic oxynitride containing an element A being Hf or a mixture of Hf and Zr, an element B being Al, and N and O, the manufacturing method comprising: a step of forming a metallic oxynitride whose mole fraction of the element A, the element B, and N expressed as B/(A+B+N) has a range of 0.015≦(B/(A+B+N))≦0.095 and mole fraction of the element A, element B, and N expressed as N/(A+B+N) has a range of 0.045≦(N/(A+B +N)) and whose mole fraction of the element A and O expressed as O/A has a range of 1.0<(O/A)<2.0, and having a noncrystalline structure; and a step of performing an annealing treatment at 700° C. or higher on the metallic oxynitride having a noncrystalline structure to form a metallic oxynitride including a crystalline phase with a cubical crystal incorporation percentage of 80% or higher.