Stock material or miscellaneous articles – Magnetic recording component or stock – Thin film media
Reexamination Certificate
2005-02-04
2008-09-16
Bernatz, Kevin M (Department: 1794)
Stock material or miscellaneous articles
Magnetic recording component or stock
Thin film media
C428S829000, C428S830000, C428S216000, C360S131000
Reexamination Certificate
active
07425377
ABSTRACT:
A laminate structure is disclosed comprising multiple ferromagnetic layers achieving incoherent reversal while maintaining good SNR. A high magnetic moment density, low anisotropy field material may form a thin overlayer deposited over a high-anisotropy media layer. The media layer may have a lower magnetic moment density than the overlayer and have decoupled magnetic grains. A coupling layer may be interposed between the overlayer and the media layer to modulate the exchange there between, thereby reducing the pass-through of noise while still promoting incoherent reversal to achieve reduced write energy requirements.
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Do Hoa Van
Fullerton Eric Edward
Margulies David Thomas
Supper Natacha
Bernatz Kevin M
Hitachi Global Storage Technologies - Netherlands B.V.
Kunzler & McKenzie
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