| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic recording medium achieving both an over-write property and thermostability, and to provide a manufacturing method thereof, and a magnetic storage device. SOLUTION: A perpendicular magnetic recording layer 32 includes a granular layer 7, a non-magnetic layer 8, a granular layer 9, and a magnetic layer 10. The granular layers 7, 9 are separated magnetically from each other by the non-magnetic layer 8. Magnetic anisotropy field of the granular layer 7 is 13kOe to 16kOe. Magnetic anisotropy field of the granular layer 9 is 10kOe to 13kOe. For example, a non-magnetic metal layer consisting of Ru or Ru alloy is formed as the non-magnetic layer 8. The magnetic layer 10 is consist of, for example, CoCrPt system alloy such as CoCrPtB, CoCrPtCu, CoCrPtAg, CoCrPtAu, CoCrPtTa, CoCrPtNb. The magnetic layer 10 does not include oxide, a plurality of magnetic particles are close to each other in the magnetic layer 10. COPYRIGHT: (C)2009,JPO&INPIT
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