| 摘要 |
PROBLEM TO BE SOLVED: To make a recording medium superior in recording performance at a high recording density area obtainable by constituting the recording medium of two layers of a base soft magnetic film and a vertical magnetization film, and forming the base soft magnetic film of an insulator base soft magnetic film. SOLUTION: The vertical magnetic recording medium 20 has a vertical magnetization film 28 and an insulator soft magnetic film 24 under the vertical magnetization film 28 formed on a substrate 22. By using a ferrite soft magnetic film, a garnet type ferrite soft magnetic film, a granule soft magnetic film or the like of an oxide soft magnetic substance having a larger resistivity than a metallic soft magnetic film as a base soft magnetic film, an eddy current loss of the base soft magnetic film to a high-frequency recording magnetic field with a high recording density is reduced, and a magnetization responsivity of the base soft magnetic film to the high-frequency recording magnetic field is improved, thereby, the vertical magnetic recording medium having a superior recording performance at a high recording density area can be obtained. Even if a recording frequency is improved in accordance with an improvement in recording density, deteriorating of the recording performance is restricted to meet super high-density recording.
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