Magnetic transfer master carrier and magnetic transfer method

Details Magnetic transfer master carrier and magnetic transfer method Magnetic transfer master carrier and magnetic transfer method

2011-07-05

2011-07-05

Negrón, Daniell L (Department: 2627)

Dynamic magnetic information storage or retrieval

Record copying

Contact transfer

Reexamination Certificate

active

07974028

ABSTRACT:
A magnetic transfer master carrier of the present invention includes a base material having convex portions on its surface, the convex portions being provided corresponding to a pattern of information to be recorded on a perpendicular magnetic recording medium, and a magnetic layer deposited at least on top surfaces of the convex portions, wherein when a magnetic field is applied to the magnetic transfer master carrier, the magnetic layer absorbs a magnetic flux so as to form a pattern of the magnetic field, wherein the magnetic layer includes at least two perpendicular magnetic anisotropic layers, and an antiferromagnetic coupling induction layer which is provided so as to be sandwiched in between two neighboring layers of all the perpendicular magnetic anisotropic layers, and to induce antiferromagnetic coupling therebetween.

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patent: 2003-2003325 (2003-07-01), None

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