Patent ID: 8016985
Filing Date: 2011-09-13
Classification: C23C,H01L

Abstract:
1. A magnetron sputtering apparatus comprising: a target provided in a sputtering chamber; a susceptor opposed to the target; a high-frequency power supply connected to the susceptor; a plate provided outside the sputtering chamber and coaxial with a central axis of the target; a rotary motion mechanism configured to rotate the plate about the central axis; S-pole magnets placed on one side of the plate with their S-pole end directed to the target; and first and second N-pole magnets placed on the one side of the plate with their N-pole end directed to the target, the first N-pole magnets being placed along a circle coaxial with the plate and opposed to an outer peripheral vicinity of the target, the S-pole magnets being placed inside the first N-pole magnets and along a circle coaxial with the plate, the second N-pole magnets being placed inside the S-pole magnets and along a circle coaxial with the plate, the S-pole magnets, the first N-pole magnets and the second N-pole magnets being placed eccentrically in the outer periphery portion of the target, the second N-pole magnets having a central axis being located outside an outer periphery position of a wafer mounted on the susceptor, and magnetic flux density of the first N-pole magnets and the second N-pole magnets being higher than magnetic flux density of the S-pole magnets.