| 摘要 |
An under layer, a FeCoB seed layer, a crystalline orientation control layer having an fcc structure, a non-magnetic underlying layer, a first recording layer, a second recording layer, and a protective layer are formed on a substrate. The under layer includes three layers: a first soft magnetic layer, a non-magnetic spacer layer, and a second soft magnetic layer. The first recording layer has a granular structure in which magnetic particles are dispersed in a non-magnetic material, and the second recording layer has a non-granular structure.
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