| 摘要 |
There is provided a method for manufacturing a perpendicular magnetic recording medium that includes a step for forming a smooth substrate surface without generating abnormal protrusions or the like when forming a magnetic film or the like on the surface of the substrate, the method for manufacturing a perpendicular magnetic recording medium characterized by including a polishing step in which the surface of a non-magnetic substrate is smoothed before forming the laminated structure on top of the non-magnetic substrate, wherein a polishing liquid used in the polishing step contains diamond particles within a range from 0.001 to 0.05% by mass and also contains a polishing accelerator within a range from 10 to 100 times the amount of diamond particles, and the polishing accelerator is an organic polymer material containing a sulfonic group or a carboxylic group and having an average molecular weight of 4,000 to 10,000. |
