| 摘要 |
A perpendicular magnetic recording medium is disclosed that exhibits improved write performance without impairing thermal stability or electromagnetic conversion performance such as noise characteristics. A perpendicular magnetic recording medium of the invention comprises a nonmagnetic underlayer and a granular type magnetic layer. In measurements on ferromagnetic crystal grains by grazing incidence X-ray diffraction, a ratio A/B is in the range of 0.2 to 1.5, in which A represents an integrated intensity of fcc (111) peak obtained with a X-axis angle of 69.5° and B represents an integrated intensity of hcp (101) peak obtained with a X-axis angle of 60.2°. The medium can include a soft magnetic backing layer and a seed layer. The seed layer preferably is a lamination of a layer with an amorphous structure and a layer with a crystal structure of fcc or hcp.
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