Patent ID: 7208421

Claim:
A metal film production method which comprises: independently disposing an etched member, formed from a metal forming a high vapor pressure halide, at a position opposed to a substrate in a chamber accommodating the substrate in an interior thereof; etching the etched member with a source gas plasma containing a halogen within the chamber to form a precursor comprising a metallic component and the halogen; and controlling temperatures of the etched member and the substrate so as to effect a temperature of the substrate lower than a temperature of the etched member and so as to provide a temperature difference at least equal to or more than 100 degrees C. between the temperature of the substrate and the temperature of the etched member, thereby adsorbing the precursor onto the substrate, said metal film production method further comprising: separately generating radicals of another halogen; and replenishing the generated radicals of the other halogen around a vicinity of the substrate to extract a halogen from the precursor adsorbed onto the substrate, thereby depositing the metallic component on the substrate for performing the predetermined film formation.