Patent ID: 9034157
Filing Date: 2015-05-19
Classification: C23C,G11B

Abstract:
1. An apparatus for reorienting the magnetic anisotropy of magnetic recording discs, comprising: a pallet that is moveable along a path of travel and that is sized to selectively hold either a first magnetic recording disc of a first size or a second magnetic recording disc of a second size different than the first size; a first processing chamber in the path of travel adapted for forming a soft underlayer (SUL) of magnetic material with non-radially oriented magnetic anisotropy on a substrate corresponding to one of the first and second magnetic recording discs; and a second processing chamber in the path of travel downstream of the first processing chamber adapted for selectively re-orienting the SUL's magnetic anisotropy via a magnetic source concurrently emanating a magnetic center for each of a plurality of magnetic recording discs held by the pallet and concurrently emanating a radially directed magnetic field from each of the magnetic centers.