Patent ID: 7482234

Claim:
A method of fabricating a metal compound thin film comprising the steps of: forming an interface layer or an antidiffusion film on a substrate; forming a metal oxide film on the interface layer or the antidiffusion film by an atomic layer deposition method; a first annealing in which the metal oxide film in an atmosphere including a nitrogen compound gas is annealed at a temperature of 750° C.-950° C., so as to diffuse nitrogen in the metal oxide film and form a metal oxynitride film in an amorphous state; and a second annealing in which the metal oxynitride film is annealed in an atmosphere including an oxidizing gas at a temperature of 850° C.-950° C., wherein said step of forming the metal oxide film and the step of forming the metal oxynitride film are repeated several times, whereupon said second annealing is performed.