Patent ID: 8016982
Filing Date: 2011-09-13
Classification: C23C,H01J

Abstract:
1. A sputtering apparatus comprising a vacuum chamber, a target arranged in the vacuum chamber, a magnetic circuit arranged on a back surface side of the target and containing a perpendicular magnet unit and a parallel magnet unit, and a substrate holder arranged on a front surface side of the target and for holding a substrate; the perpendicular magnet unit composed of a center perpendicular magnet and a perimeter perpendicular magnet, and directions of magnetic fields of both magnets of the perpendicular magnet unit being roughly perpendicular to the target surface, and directions of magnetic fields of the center perpendicular magnet and the perimeter perpendicular magnet being opposite each other, and the center perpendicular magnet being installed in central part of a back surface of the target, and the perimeter perpendicular magnet being annularly installed in perimeter part of the back surface of the target so as to surround the center perpendicular magnet; the parallel magnet unit composed of an inside parallel magnet and an outside parallel magnet, and directions of magnetic fields of both magnets of the parallel magnet unit being roughly parallel to the target surface, and directions of magnetic fields of the inside parallel magnet and the outside parallel magnet being the same each other, and both magnets of the parallel magnet unit being annularly installed between the center perpendicular magnet and the perimeter perpendicular magnet so as to surround the center perpendicular magnet, and the inside parallel magnet being arranged in the position closer to a central side of the back surface of the target than the outside parallel magnet; and when an interval between the inside parallel magnet and the surface of the target being defined as D