Co-Cr perpendicular recording medium by vacuum deposition

Magnetic and structural properties, crystal orientation, resistance to atmospheric corrosion, and depth profile of vacuum deposited Co-Cr perpendicular anisotropy films are presented. In contrast to the RF sputtered Co-Cr films having a rather small deposition rate, the present study confirms the applicability of vacuum deposition to the preparation of Co-Cr perpendicular anisotropy films at a deposition rate up to 6000 Å/sec. It was found that films with relatively high magnetization and coercive force could be made which at the same time exhibited good corrosion resistance.