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Updated: Aug 3, 2026

Fabrication of Magnetic Nanostructures on Silicon Nitride Membranes for Magnetic Vortex Studies Using Transmission Microscopy Techniques
Published on: July 2, 2018
Planar patterned magnetic media obtained by ion irradiation
1C. 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.
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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