Stock material or miscellaneous articles – Magnetic recording component or stock – Thin film media
Reexamination Certificate
2007-09-18
2007-09-18
Rickman, Holly (Department: 1773)
Stock material or miscellaneous articles
Magnetic recording component or stock
Thin film media
C428S402000, C428S827000
Reexamination Certificate
active
10955545
ABSTRACT:
Magnetic crystalline grains are spaced from each other on a base layer a polycrystalline structure. The magnetic crystalline grains are made of an ordered alloy. The ordered alloy serves to ensure the crystalline magnetic anisotropy energy larger than that of Co alloy in the magnetic crystalline grains. Such crystalline magnetic anisotropy energy reaches over 1×106J/m3, for example. A sufficient magnetic crystalline magnetic anisotropy energy serves to reliably maintain the magnetization in finely structured magnetic crystalline grains. The ordered alloy may have the L10structure, for example. The ordered alloy may include of Fe50Pt50(atom %), Fe50Pd50(atom %), Co50Pt50(atom %), and the like.
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Fujitsu Limited
Greer Burns & Crain Ltd.
Rickman Holly
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