Patent ID: 8778144

Claim:
A method for manufacturing magnetron coated substrates comprising: providing in a vacuum recipient, a magnetron source comprising a stationary target arrangement with a sputter surface and a planar backside; providing along the planar backside, a first magnet arrangement generating along said sputter surface a first closed loop of tunnel-shaped magnetron magnetic field eccentrically about an axis perpendicular to said planar backside, said first magnet arrangement having a first outer part and a first inner part, said first outer and first inner parts having pole surfaces extending along and pointing toward said planar backside; providing along said planar backside, a second magnet arrangement for generating along said sputter surface a second closed loop of tunnel-shaped magnetron magnetic field, said second magnet arrangement having a second outer part and a second inner part, said second outer and second inner parts having pole surfaces extending along and pointing toward said planar backside; said first magnet arrangement being nested within said second magnet arrangement; providing a substrate opposite to and spaced from said sputter surface; rotating said first inner and said first outer parts about said axis relative to said second outer and said second inner parts; selectively moving only said first magnet arrangement linearly with respect to said second outer and said second inner parts, towards and away from said backside for varying a distance to said planar backside, while leaving positioning of the pole surfaces of said second outer and said second inner parts of said second magnet arrangement unmoved by said linear moving; and sputter coating said substrate; wherein said second magnet arrangement rotates independently relative to said first magnet arrangement.