Magnetic recording medium and the method of manufacturing...

Details Magnetic recording medium and the method of manufacturing... Magnetic recording medium and the method of manufacturing...

2005-01-18

2008-08-05

Bashore, Alain L (Department: 1792)

Coating processes

Magnetic base or coating

C427S128000, C427S130000, C428S690000

Reexamination Certificate

active

07407685

ABSTRACT:
A method of manufacturing a magnetic recording media includes a magnetic recording layer of a granular magnetic layer that has ferromagnetic crystal grains and an oxide nonmagnetic grain boundary or a nitride nonmagnetic grain boundary surrounding the ferromagnetic crystal grains. It further has an overcoating layer on the granular magnetic recording layer. The overcoating layer contains a nonmagnetic metal or a nonmagnetic alloy that can be diffused into the nonmagnetic grain boundary. The atoms coated on the granular magnetic recording layer diffuse into the nonmagnetic grain boundary even without being annealed, and promote to isolate the ferromagnetic crystal grains from each other. The overcoating can be removed after its formation to reduce the magnetic gap between the magnetic recording layer and the magnetic recording head.

REFERENCES:
patent: 0555512 (1993-08-01), None
patent: 363078339 (1988-04-01), None
patent: 2000-268340 (2000-09-01), None
patent: 2001-043526 (2001-02-01), None
patent: 2001-43526 (2001-02-01), None
Machine Translation of JP 2000-268340; JPO.
Machine Translation of JP 2001-043526 A.
Jii Zou et al.; “High coercivity CoCrPt films achieved by post-deposition rapid thermal annealing”; Journel of Applied Physics, vol. 87, No. 9; May 1, 2000; pp. 6869-6871.
Notification of Reasons for Refusal issued in corresponding Japanese Patent Application No.2003-050980, with mailing date Jun. 19, 2007.

Affiliated with

Also associated with

Rating

Magnetic recording medium and the method of manufacturing... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic recording medium and the method of manufacturing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic recording medium and the method of manufacturing... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4007089