| 摘要 |
PROBLEM TO BE SOLVED: To provide a perpendicular magnetic recording medium having high recording density and excellent recording and reproducing characteristics and to provide a method of manufacturing the same. SOLUTION: The recording medium has a magnetic layer 6 of a multilayered lamination structure composed of laminated cobalt layers to be first magnetic layers 6a and platinum layers (or palladium layers) to be second magnetic layers 6b. At least one element selected from the group consisting of Ru, Ta, Nb, Mo, Mn, Cr, Si, and Ni, or an oxide is added to at least one of the cobalt layers and the platinum layers (or the palladium layers) in a concentration ranging from 1 to 15 mol %. The magnetic layer 6 is formed on an underlayer 5 of a ruthenium film or the like provided for reducing magnetic interaction between the magnetic particles in the magnetic layer 6. The surface of the underlayer 5 is subjected to oxygen adsorption treatment prior to film deposition of the magnetic layer 6 to suppress magnetic interaction between the magnetic particles in the magnetic layer 6. COPYRIGHT: (C)2005,JPO&NCIPI
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