| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a magnetic recording medium which is excellent in terms of both recording and reproduction characteristics and thermal decay characteristics without reducing the density and hardness of the perpendicular magnetic layer; a magnetic recording medium; and a magnetic recording and reproducing apparatus with excellent recording density characteristics. <P>SOLUTION: At least a portion of the perpendicular magnetic layer 4 is formed as a magnetic layer having a granular structure that contains Co as a major component and also contains an oxide of at least one nonmagnetic metal selected from the group consisting of Cr, Si, Ta, Al, Ti, W, and Mg; and a target for forming the perpendicular magnetic layer 4 by sputtering includes an oxide of Co and a compound of Co and at least one nonmagnetic metal selected from the group consisting of Cr, Si, Ta, Al, Ti, W, and Mg, and the proportion of oxygen contained in the target is set to be higher than the proportion of oxygen contained in the perpendicular magnetic layer 4, and sputtering gas pressure during formation of the perpendicular magnetic layer 4 is set to 1 Pa or less. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
