Patent ID: 8663432
Filing Date: 2014-03-04
Classification: C23C,G11B

Abstract:
1. A magnetron sputtering apparatus comprising: a sputtering chamber in which a target can be opposed to an object to be subjected to film formation; a gas introduction port facing the sputtering chamber; a magnet provided outside the sputtering chamber and opposite to the target and being rotatable about a rotation center which is eccentric with respect to center of the magnet; a sensor configured to detect a rotational position of the magnet in a plane of rotation of the magnet; and a controller configured to control start timing of voltage application to the target to cause electrical discharge in the sputtering chamber on the basis of the rotational position of the rotating magnet with respect to a position of the gas introduction port, wherein the controller starts the voltage application to the target when the center of the magnet is located on a region in the sputtering chamber in which a gas pressure is lower than at the gas introduction port.