Stock material or miscellaneous articles – Magnetic recording component or stock – Thin film media
Reexamination Certificate
2006-10-03
2006-10-03
Bernatz, Kevin M. (Department: 1773)
Stock material or miscellaneous articles
Magnetic recording component or stock
Thin film media
C428S831200, C427S129000, C427S131000
Reexamination Certificate
active
07115330
ABSTRACT:
A magnetic recording medium including a textured surface that is textured in a predetermined direction. The textured surface preferably has a distance λ between two mutually adjacent texturing lines satisfying a relationship 5<λ<30 nm, and an angle φ between the textured surface and an oblique texture plane satisfying a relationship 0.5<φ<7 degrees. There is also a Cr-based underlayer provided on the textured surface that has a preferred growth so that a number of grains having Cr<110> in a vicinity of 0 degrees or 90 degrees with respect to the predetermined direction is two times or greater than a number of grains having Cr<110> in a vicinity of 45 degrees with respect to the predetermined direction. Additionally, there is also a Co-based magnetic layer provided on the underlayer that has Co(1120) preferred growth along the predetermined direction.
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Ajan Antony
Okamoto Iwao
Bernatz Kevin M.
Greer Burns & Crain Ltd
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