Patent ID: 7351596

Claim:
A method for fabricating semiconductor wafers using physical vapor deposition, the method comprising: maintaining a substrate on a susceptor in a chamber, the substrate having a face positioned within a vicinity of a target material, the target material being within the chamber, the target member comprising a first side and a second side, the first side being positioned toward the face of the substrate; operating a magnet device fixed about a rotating member, the rotating member being coupled to the chamber and being coupled to a drive motor, the drive motor being coupled to a driver, the magnet device being positioned from a center region of the rotating member by a predetermined dimension; moving the magnet device in an annular manner about the center region using the rotating member, the magnet device being rotated at a velocity v and influencing a spatial region, the spatial region being positioned overlying the second side of the target; capturing information associated with an electromagnetic energy field associated with the moving magnet device at the velocity v; processing at least a portion of the information to determine if the electromagnetic energy field is within one or more predetermined parameters; and transferring one or more signals to the driver to adjust the velocity of the moving magnetic device to cause a change to the electromagnetic energy field.