| 摘要 |
A high areal recording density, perpendicular magnetic recording medium, comprises:(a) a non-magnetic substrate having a surface with a layer stack formed thereon, the layer stack comprising, in overlying sequence from the substrate surface:(b) a soft ferromagnetic "keeper" or underlayer;(c) an anti-ferromagnetic coupling layer structure; and(d) a hard ferromagnetic perpendicular recording layer including a multilayer magnetic superlattice structure;wherein layers (b), (c), and (d) in stacked combination provide the medium with improved thermal stability and a high perpendicular coercivity which can exceed about 6,500 Oe.
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