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. 1998 Jun 19;280(5371):1919-22.
doi: 10.1126/science.280.5371.1919.

Planar patterned magnetic media obtained by ion irradiation

C Chappert  1 , H Bernas, J Ferre, V Kottler V, J Jamet, Y Chen, E Cambril, T Devolder, F Rousseaux, V Mathet V, H Launois
Affiliations

Planar patterned magnetic media obtained by ion irradiation

C Chappert et al. Science. .

Abstract

By ion irradiation through a lithographically made resist mask, the magnetic properties of cobalt-platinum simple sandwiches and multilayers were patterned without affecting their roughness and optical properties. This was demonstrated on arrays of 1-micrometer lines by near- and far-field magnetooptical microscopy. The coercive force and magnetic anisotropy of the irradiated regions can be accurately controlled by the irradiation fluence. If combined with high-resolution lithography, this technique holds promise for ultrahigh-density magnetic recording applications.

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