Patent ID: 6620298
Filing Date: 2003-09-16
Classification: C23C,H01J

Abstract:
A magnetron sputtering method comprising:arranging a first target within a vacuum chamber; arranging a substrate opposite the first target within the vacuum chamber; arranging a second target within the vacuum chamber with a target surface not facing the substrate; introducing a gas into the vacuum chamber and adjusting pressure within the vacuum chamber to a first predetermined pressure; providing first and second electromagnets respectively to the first target and the second target; reducing the pressure within the vacuum chamber to a second predetermined pressure lower than the first predetermined pressure; supplying current to the second electromagnet and not to the first electromagnet during a period when the vacuum chamber is at the first predetermined pressure and is being reduced to the second predetermined pressure; and supplying electric current to the first electromagnet after the second pressure is reached so that film-formation on the substrate is effectuated.