Ion induced magnetic patterning using chemical disordered induced ferromagnetism


Ion induced magnetic patterning using chemical disordered induced ferromagnetism

Bali, R.; Wintz, S.; Meutzner, F.; Hübner, R.; Boucher, R.; Ünal, A. A.; Valencia, S.; Neudert, A.; Potzger, K.; Bauch, J.; Kronast, F.; Facsko, S.; Lindner, J.; Fassbender, J.

Certain binary alloys exhibit magnetic properties which heavily depend on their structural order/disorder. For example FeAl is paramagnetic in the chemically ordered B2-phase whereas it shows ferromagnetic behavior if the chemically disordered A2-phase is investigated. We will demonstrate that by means of ion irradiation a phase transition from the chemically ordered to the chemically disordered phase can easily be achieved and that temperature treatment leads to the reverse phase transition.
One of the major advantages of ion irradiation is the fact that the interaction is extremely local and hence nanoscale disorder features can directly be written into an ordered environment. This technology is used to create nanoscale ferromagnetic features in a paramagnetic matrix. The achievable magnetic patterning resolution is determined and the magnetic domains as well as stray fields arising from the nanomagnets are imaged.

Reference:

R. Bali et al., Nano Lett. 14, 435 (2014).

Keywords: ion irradiation; magnetism; magnetic domains; patterning

Related publications

  • Invited lecture (Conferences)
    International Conference on Nanostructuring by Ion Beams, 23.-25.11.2015, Agra, Indien

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Publ.-Id: 22450