Patent ID: 6860977

Claim:
A method for manufacturing a workpiece using a magnetron sputter source comprising: providing a round target body ( 1 ) whose front side has a sputter face; placing a workpiece to be treated in a position facing the sputter face; providing a magnet system ( 2 , 3 , 4 , 5 , 10 , 11 ) comprising an inner pole ( 4 ) and an annular outer pole ( 3 ) annularly encompassing the inner pole ( 4 ), such that a magnetic field (B) develops over the sputter face in the form of a closed tunnel loop about a central source axis ( 6 ) of the magnetron sputter source; rotatable supporting at least a portion of the magnet system ( 2 , 3 , 4 , 5 , 10 , 11 ) about the source axis ( 6 ); rotating the rotatable magnet system portion about the source axis ( 6 ) using driving means ( 30 ); the annular outer pole ( 3 ) being disposed in a different plane from the plane of the inner pole ( 4 ), in a margin region around the round target body ( 1 ) and the annular outer pole ( 3 ) being elevated, the rotatable magnet system portion receiving the inner pole ( 4 ), which inner pole ( 4 ) is disposed eccentrically to the axis ( 6 ) and a second outer pole part ( 11 ) is disposed between the annular outer pole ( 3 ) and the inner pole ( 4 ) and on the rotatable magnet system portion; and with rotation of the rotatable magnet system portion, eccentrically sweeping a tunnel loop of the magnetic field (B) over the sputter face for manufacturing the workpiece.