Stock material or miscellaneous articles – Magnetic recording component or stock – Thin film media
Reexamination Certificate
2007-03-06
2007-03-06
Rickman, Holly (Department: 1773)
Stock material or miscellaneous articles
Magnetic recording component or stock
Thin film media
Reexamination Certificate
active
10374641
ABSTRACT:
A magnetic recording layer having polycrystalline chemical ordered (COX)3Pt or (COX)3PtY alloys. The additive X comprises Sc, Ti, V, Cr, Mn, Ni, Cu, Zn, Ga, Ge, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Hf, Ta, W, Re, Os, B, or C, or any combination thereof. The additive Y comprises B, MgO, Al2O3, SiO2, P, CaO, CoO, B2O3, ZnO, NbO, Mo2O3, Co2O3, C, Cr, P, TiO2, Cr2O3, MnO, ZrO2, or BaO. The ratio of (CoX) to Pt is 2.33 to 4.00, plus or minus 5%. The additive Y may range from approximately 0 to 20% of the entire composition. The magnetic layer may be a constituent layer in a hard disc drive magnetic recording medium.
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Lu Bin
Weller Dieter
Bordas-Loutzenhiser Carol
Patterson & Sheridan LLP
Rickman Holly
Seagate Technology LLC
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