Perpendicular magnetic recording medium and magnetic...

Details Perpendicular magnetic recording medium and magnetic... Perpendicular magnetic recording medium and magnetic...

2005-01-25

2005-01-25

Jones, Deborah (Department: 1775)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S693100, C428S690000, C360S100100, C360S324000

Reexamination Certificate

active

06846581

ABSTRACT:
Disclosed is a perpendicular magnetic recording medium, comprising a nonmagnetic substrate, a longitudinal hard magnetic multi-layered film arranged on the nonmagnetic substrate, including a nonmagnetic intermediate layer and a pair of hard magnetic layers laminated one upon the other with the nonmagnetic intermediate layer interposed therebetween, and having at least two hard magnetic layers, a longitudinal soft magnetic layer formed on the longitudinal hard magnetic multi-layered film, and a perpendicular magnetic recording layer formed on the longitudinal soft magnetic layer. The perpendicular magnetic recording medium of the particular construction is capable of suppressing noise and achieves a high recording magnetic field intensity and a high recording resolution.

REFERENCES:
patent: 4621030 (1986-11-01), Uesaka et al.
patent: 5700594 (1997-12-01), Jeffers
patent: 5738938 (1998-04-01), Kawano et al.
patent: 5792564 (1998-08-01), Hikosaka et al.
patent: 5815342 (1998-09-01), Akiyama et al.
patent: 5942342 (1999-08-01), Hikosaka et al.
patent: 6120890 (2000-09-01), Chen et al.
patent: 20020044393 (2002-04-01), Seigler et al.
patent: 20020181173 (2002-12-01), Nagai
patent: 3-53686 (1991-08-01), None
patent: 5-258274 (1993-10-01), None
patent: 6-28652 (1994-02-01), None
patent: 11144229 (1999-05-01), None

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