Patent ID: 7816282

Claim:
An SrTiO 3 film forming method for forming an SrTiO 3 film on a substrate placed and heated inside a process chamber while supplying a gaseous Ti source material, a gaseous Sr source material, and a gaseous oxidizing agent into the process chamber, wherein Sr(C 5 (CH 3 ) 5 ) 2 is used as the Sr source material, H 2 O pretreated by deoxidization is used as the gaseous oxidizing agent, and the method is arranged to perform a plurality of cycles to laminate thin films respectively formed by the cycles, thereby forming the SrTiO 3 film with a predetermined thickness, each of the plurality of cycles sequentially comprising: supplying the gaseous Ti source material into the process chamber and thereby adsorbing the gaseous Ti source material onto the substrate; supplying the gaseous oxidizing agent into the process chamber and thereby decomposing and oxidizing the Ti source material thus adsorbed and forming a Ti-containing oxide film; supplying the gaseous Sr source material into the process chamber and thereby adsorbing the gaseous Sr source material onto the Ti-containing oxide film; and supplying the gaseous oxidizing agent into the process chamber and thereby decomposing and oxidizing the Sr source material thus adsorbed and forming an Sr-containing oxide film.