Enhancement of magnetic media recording performance using...

Coating processes – Direct application of electrical – magnetic – wave – or... – Ion plating or implantation

Reexamination Certificate

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C427S526000, C427S130000, C148S100000, C148S239000

Reexamination Certificate

active

10768347

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+.

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