Planar patterned magnetic media obtained by ion irradiation
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.
Chappert
C
C. Chappert, V. Kottler, T. Devolder, V. Mathet, Institut d'Electronique Fondamentale, Unite de Recherche Associee CNRS 022, Universite Paris Sud, 91405 Orsay Cedex, France. H. Bernas, Centre de Spectrometrie Nucleaire et de Spectromet.
Bernas
H
Ferre
J
Kottler
V
Jamet
J
Chen
Y
Cambril
E
Devolder
T
Rousseaux
F
Mathet
V
Launois
H