| 摘要 |
<p>A magnetic recording medium comprises: a nonmagnetic underlayer; an initial magnetic layer; a nonmagnetic spacer layer provided on the initial magnetic layer; a middle magnetic layer provided on the nonmagnetic spacer layer; and a final magnetic layer provided on the middle magnetic layer, said initial magnetic layer being disposed closer to said nonmagnetic underlayer than said middle and final magnetic layers, said initial and middle magnetic layers being anti-ferromagnetically coupled, said middle and final magnetic layers being ferromagnetically coupled, said initial, middle and final magnetic layers satisfying a relationship Msi ≦ Msm < Msf, where Msi denotes a saturation magnetization of the initial magnetic layer, Msm denotes a saturation magnetization of the middle magnetic layer and Msf denotes a saturation magnetization of the final magnetic layer.
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