Perpendicular magnetic recording medium

Abstract

Abstract PURPOSE:To improve magnetic characteristics in a perpendicular direction by disposing segregation regions of Cr in the direction along the plane of a Co-Cr base magnetic film to the state in which the average disposition periods thereof are 30Angstrom -300Angstrom . CONSTITUTION:The Co-Cr base magnetic film is so constituted that the average distances of the respective disposition intervals of the Cr segregation regions 51 adjacent to each other in the equal directions with respect to the entire direction along the plane of said film, i.e., the average disposition periods of the segregation regions are in a 30Angstrom -300Angstrom region. The distribution mode of the Cr segregation regions 51 can be easily and surely controlled by addition of carbon C and selection of the amt. of the carbon to be added together with sputtering or vapor deposition conditions at the time of preparing the above- mentioned magnetic film. The perpendicular magnetic characteristics, more particularly perpendicular coercive force and saturation magnetization are thereby improved.

Inventors

• 👤 Haruko Masuya
• 👤 春子 桝屋
• 👤 Haruo Awano
• 👤 晴夫 粟野
• 👤 Sachiko Fukushima
• 👤 福島　幸子

Bibliographic Details