Enhancement of magnetic media recording performance using...

Details Enhancement of magnetic media recording performance using... Enhancement of magnetic media recording performance using...

2004-01-29

2008-09-16

Rickman, Holly (Department: 1794)

Coating processes

Direct application of electrical, magnetic, wave, or...

Ion plating or implantation

C427S526000, C427S130000, C148S100000, C148S239000

Reexamination Certificate

active

07425353

ABSTRACT:
Magnetic medium recording performance can be enhanced by irradiating a magnetic medium with ions having an acceleration voltage of between 10 keV and 100 keV to induce exchange coupling between grains of the magnetic medium. The magnetic medium is exposed to a cumulative ion dosage of between 1013ions/cm2and 1017ions/cm2using a non-patterned exposure of the magnetic medium. The ions can be selected from the group consisting of H+, He+, Ne+, Ar+, Kr+, and Xe+. Alternatively, the ions can be selected from the group consisting of Ga+, Hg+, and In+.

REFERENCES:
patent: 4481042 (1984-11-01), Takigawa et al.
patent: 5834085 (1998-11-01), Lairson et al.
patent: 6331364 (2001-12-01), Baglin et al.
patent: 6368425 (2002-04-01), Segar et al.
patent: 6383597 (2002-05-01), Fullerton et al.
patent: 6605321 (2003-08-01), Ravelosona-Ramasitera et al.
patent: 2001/0018107 (2001-08-01), Ishii
patent: 61133030 (1986-06-01), None
patent: 11110757 (1999-04-01), None
Chappert et al., “Planar PAtterned Magnetic Media Obtained by Ion Irraditation”, Jun. 1998, Science, vol. 280, pp. 1919-1922.
Y. Sonobe et al., “Thermal Stability and SNR of Coupled Granular/Continuous Media,” IEEE Transactions On Magnetics, vol. 37, No. 4, pp. 1667-1670, Jul. 2001.
Y. Sonobe et al., “Thermally Stable CGC Perpendicular Recording Media With Pt-Rich CoPtCr and Thin Pi Layers,” IEEE Transactions On Magnetics, vol. 38, No. 5, pp. 2006-2001, Sep. 2000.
“SRIM—2003, The Stopping and Range of Ions in Matter,” http://www.srim.org/SRIM/SRIM2003.htm, printed Sep. 25, 2003, 11:27 AM, 2 pages.

Affiliated with

Also associated with

Rating

Enhancement of magnetic media recording performance using... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Enhancement of magnetic media recording performance using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enhancement of magnetic media recording performance using... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3976556