Bit patterned medium

Details Bit patterned medium Bit patterned medium

2008-02-28

2011-10-25

Ruthkosky, Mark (Department: 1727)

Stock material or miscellaneous articles

Magnetic recording component or stock

Thin film media

C428S800000

Reexamination Certificate

active

08043733

ABSTRACT:
A bit patterned medium in which an exchange coupling layer induces exchange coupling between adjacent bits in order to reduce a switching field difference resulting from different magnetization directions of bits. The exchange coupling layer is disposed either over or under a recording layer having a plurality of bits. The exchange coupling layer induces exchange coupling between a bit which is to be recorded and an adjacent bit and reduces a switching field difference resulting from a difference between the magnetization direction of the bit to be recorded and the magnetization direction of neighboring bits due to an exchange coupling force generated during the exchange coupling.

REFERENCES:
patent: 2007/0281078 (2007-12-01), Kikitsu et al.
patent: 2008/0057349 (2008-03-01), Berger et al.

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