Nanoscale Magnetic Lithography on FeAl alloys by ion irradiation and nanoindentation


Nanoscale Magnetic Lithography on FeAl alloys by ion irradiation and nanoindentation

Sort, J.; Menendez, E.; Varea, A.; Pi, F.; Surinach, S.; Baro, M. D.; Nogues, J.

Nanoindentation and local ion irradiation (i.e., focused ion beam or broad beam irradiation through shadow masks, such as alumina templates or PMMA masks) are shown to be effective methods to generate periodic arrays of sub-micron ferromagnetic dots at the surface of paramagnetic Fe60Al40 alloys (both in the form of sheets and thin films). The fabricated entities exhibit a variety of magnetic properties depending on their size and shape. Remarkably, in some cases, the magnetic anisotropy of the dots is oriented perpendicular to the film plane. Furthermore, the ferromagnetic properties of the patterned structures can be removed by annealing at sufficiently high temperatures, thus evidencing the reversible character of this novel magnetic lithography procedure.

Keywords: magnetism; ion irradiation; binary alloy; ordering; nanoscale; patterning

  • Invited lecture (Conferences)
    ICAM International Conference on Advanced Materials, 20.-25.09.2009, Rio de Janeiro, Brasilien

Permalink: https://www.hzdr.de/publications/Publ-12784
Publ.-Id: 12784