Patent ID: 6682637
Filing Date: 2004-01-27
Classification: H01J

Abstract:
Magnetron sputter source comprising: a round target body (1), whose front side has a sputter face (20, 21), 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 (20, 21) in the form of a closed tunnel loop about a central source axis (6) of the magnetron sputter source, at least a portion of the magnet system (2, 3, 4, 5, 10, 11) being supported rotatable about the source axis (6) and operationally connected to driving means (30), the annular outer pole (3) being disposed in a different plane from the plane of the inner pole (4) and in a margin region around the round target body (1), the annular outer pole (3) being elevated and 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) disposed between the annular outer pole (3) and the inner pole (4) and on the rotatable magnet system portion, such that with rotation of the rotatable magnet portion, the tunnel loop of the magnetic field (B) sweeps eccentrically over the sputter face (20, 21).