| 摘要 |
PROBLEM TO BE SOLVED: To provide a perpendicular magnetic recording disk with mechanical stability and corrosion resistance. SOLUTION: The perpendicular magnetic recording disk has a granular cobalt alloy recording layer (RL) containing on the "soft" magnetic underlayer (SUL). The SUL is doped with judiciously chosen elements (B, B<SB>4</SB>C, BN, SiC) or alloys or is capped or intercalated with the elements or metal alloy layers. The resulting disk and the SUL in particular has good recording properties, improved mechanical strength and improved corrosion resistance over a comparable disk without the doping or thin layers. COPYRIGHT: (C)2008,JPO&INPIT
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