| 摘要 |
PROBLEM TO BE SOLVED: To provide a perpendicular magnetic recording medium capable of securing a high SNR while enhancing reliability by increasing strength of a coated film of a granular layer, and to provide a method for manufacturing the same. SOLUTION: In the perpendicular magnetic recording medium 100 including at least a granular layer having a granular structure which is made of a Co-based alloy and where crystal grains are grown in a columnar shape on a disk base body 110, the granular layer (a non-magnetic granular layer 120, a first magnetic recording layer 122a, a second magnetic recording layer 122b) is film-deposited on the disk base body 110 by changing film-deposition speed from a low speed to a high speed or from the high speed to the low speed. COPYRIGHT: (C)2010,JPO&INPIT
|
