| 摘要 |
PROBLEM TO BE SOLVED: To provide a perpendicular magnetic recording disk using a magnetically resettable single magnetic domain soft underlayer. SOLUTION: A perpendicular magnetic recording disk 300 may include a hard magnetic pinning layer 320 arranged on substrate 310, a spacer layer 330 arranged on the hard magnetic pinning layer, a soft ferromagnetic film 340 arranged on the spacer layer, and a magnetic recording layer 350 arranged on the soft ferromagnetic film. COPYRIGHT: (C)2006,JPO&NCIPI
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