Information recording medium and information storing device

Details Information recording medium and information storing device Information recording medium and information storing device

2005-04-05

2005-04-05

Rickman, Holly (Department: 1773)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S690000, C428S336000, C428S900000

Reexamination Certificate

active

06875527

ABSTRACT:
A perpendicular magnetic recording medium including a substrate, a soft-magnetic backing layer formed on the substrate, a magnetic recording layer having perpendicular magnetic anisotropy formed on the backing layer, and a leakage magnetic field control layer having ferrimagnetism formed on the magnetic recording layer. The leakage magnetic field control layer is exchange-coupled to the magnetic recording layer antiferromagnetically or ferrimagnetically to thereby suppress the influence of leakage magnetic fields from the backing layer and the magnetic recording layer and reduce the medium noise.

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