Patent ID: 6432285
Filing Date: 2002-08-13
Classification: H01J

Abstract:
A magnetron sputtering assembly comprising, in combination:a pole member defining a plane and being formed of magnetically permeable material; a center primary magnet positioned on the pole member and oriented such that a north-south magnetic orientation of the center primary magnet extends substantially perpendicular to the plane of the pole member; an outer primary magnet positioned on the pole member proximate an outer edge of the pole member, a north-south magnetic orientation of the outer primary magnet extending substantially perpendicular to the plane of the pole member and opposite to the north-south orientation of the center primary magnet; a center secondary magnet positioned on the pole member between the center primary magnet and the outer primary magnet, a north-south magnetic orientation of the center secondary magnet extending substantially perpendicular to the plane of the pole member and opposite to the north-south orientation of the center primary magnet, wherein the center secondary magnet is in contact with the center primary magnet.