Perpendicular magnetic recording medium and methodof manufacturing thereof

摘要

The present invention initially forms a soft magnetic back-lining layer 2 on a non-magnetic substrate 1. Next, an intermediate layer 5 is formed on the soft magnetic back-lining layer 2. Next, a magnetic recording layer 6 is formed on the intermediate layer 5. Next, a protective film 7 and a liquid lubricating layer 8 are serially formed on the magnetic recording layer 6. Thermal treatment is executed at a stage after the formation of the magnetic recording layer 6 and before the formation of the protective film 7, or at a stage after the formation of the protective film 7 and before the formation of the liquid lubricating layer 8. The thermal-processing process is executed in a vacuum higher than 0.1 Pa and in a thermal environment within a range from 200