Perpendicular magnetic recording medium

Details Perpendicular magnetic recording medium Perpendicular magnetic recording medium

2007-03-27

2007-03-27

Bernatz, Kevin M. (Department: 1773)

Stock material or miscellaneous articles

Magnetic recording component or stock

Thin film media

C428S831200, C428S836100

Reexamination Certificate

active

10722599

ABSTRACT:
A perpendicular magnetic recording medium includes a substrate, an underlayer formed on the substrate, and containing at least one element selected from the group A consisting of Pt, Pd, Rh, Ag, Au, Ir and Fe, and at least one element or compound selected from the group B consisting of C, Ta, Mo, W, Nb, Zr, Hf, V, Mg, Al, Zn, Sn, In, Bi, Pb, Cd, SiO2, MgO, Al2O3, TaC, TiC, TaN, TiN, B2O3, ZrO2, In2O3and SnO2, and a magnetic layer formed on the underlayer, containing at least one element selected from the group consisting of Fe, Co, and Ni, and at least one element selected from the group consisting of Pt, Pd, Au and Ir, and containing crystal grains having an L10structure.

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Toshio Suzuki, et al., “Sputter-Deposited (Fe-Pt)-MgO Composite Films for Perpendicular Recording Media”, IEEE Transactions on Magnetics, vol. 37, No. 4, Jul. 2001, pp. 1283-1285.

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