Stock material or miscellaneous articles – Magnetic recording component or stock – Thin film media
Reexamination Certificate
2011-08-02
2011-08-02
Bernatz, Kevin M (Department: 1785)
Stock material or miscellaneous articles
Magnetic recording component or stock
Thin film media
C428S829000
Reexamination Certificate
active
07989096
ABSTRACT:
A recording medium providing improved writeability in perpendicular recording applications includes a magnetic recording layer having an axis of magnetic anisotropy substantially perpendicular to the surface thereof, an exchange-spring layer ferromagnetically exchange coupled to the magnetic recording layer and having a coercivity less than the magnetic recording layer coercivity, and a coupling layer between the magnetic recording layer and the exchange-spring layer. The coupling layer regulates the ferromagnetic exchange coupling between the magnetic recording layer and the exchange-spring layer.
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Berger Andreas
Do Hoa Van
Fullerton Eric Edward
Supper Natacha
Bernatz Kevin M
Hitachi Global Storage Technologies - Netherlands B.V.
Kunzler Needham Massey & Thorpe
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