Stock material or miscellaneous articles – Magnetic recording component or stock – Thin film media
Reexamination Certificate
2005-06-06
2009-12-15
Rickman, Holly (Department: 1794)
Stock material or miscellaneous articles
Magnetic recording component or stock
Thin film media
C360S131000, C427S131000
Reexamination Certificate
active
07632580
ABSTRACT:
Perpendicular magnetic recording media and methods of fabricating perpendicular magnetic recording media are described. The perpendicular magnetic recording medium of one embodiment includes an interlayer, an underlayer, and a perpendicular magnetic recording layer. The interlayer is comprised of a Ni-alloy having the characteristics of being nonmagnetic and having an FCC structure. The alloying element for the Ni-alloy may comprise one of V or Cr, or may comprise one of V, Cr, or W. The concentration of the alloying element is set such that the concentration of the alloying element is high enough to make the Ni-alloy non-magnetic, while low enough to maintain an FCC structure for the Ni-alloy.
REFERENCES:
patent: 6682826 (2004-01-01), Shimizu et al.
patent: 6759148 (2004-07-01), Tanahashi et al.
patent: 6858320 (2005-02-01), Takenoiri et al.
patent: 2003/0017370 (2003-01-01), Shimizu et al.
patent: 2003/0059651 (2003-03-01), Shimizu et al.
patent: 2003/0118867 (2003-06-01), Koda et al.
patent: 2004/0001975 (2004-01-01), Hikosaka et al.
patent: 2004/0013909 (2004-01-01), Shimizu et al.
patent: 2004/0033390 (2004-02-01), Oikawa et al.
patent: 2004/0057157 (2004-03-01), Shimizu et al.
patent: 2004/0106010 (2004-06-01), Iwasaki et al.
patent: 2004/0224185 (2004-11-01), Nakamura et al.
patent: 2004/0229083 (2004-11-01), Maeda et al.
patent: 2005/0019608 (2005-01-01), Kim et al.
patent: 2008/0024918 (2008-01-01), Gouke
patent: 2003123239 (2003-04-01), None
patent: 2003242622 (2003-08-01), None
Osaka et al., “The effects of an underlayer recording characteristics of electroless plated perpendicular recording flexible media”, IEEE TRan Magn, vol. MAG-23, No. 5, Sep. 1987, pp. 2356-2358.
Ikeda Yoshihiro
Minardi Mary F.
Takano Kentaro
Xiao Qi-Fan
Duft Bornsen & Fishman LLP
Hitachi Global Storage Technologies - Netherlands B.V.
Rickman Holly
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