Programmability of Co-Antidot lattices of optimized geometry

Tobias Schneider, Manuel Langer, Julia Alekhina, Ewa Kowalska, Antje Oelschlägel, Anna Semisalova, Andreas Neudert, Kilian Lenz, Kay Potzger, Mikhail P. Kostylev, Jürgen Fassbender, Adekunle O. Adeyeye, Jürgen Lindner, Rantej Bali

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    7 Citations (Scopus)

    Abstract

    Programmability of stable magnetization configurations in a magnetic device is a highly desirable feature for a variety of applications, such as in magneto-Transport and spin-wave logic. Periodic systems such as antidot lattices may exhibit programmability; however, to achieve multiple stable magnetization configurations the lattice geometry must be optimized. We consider the magnetization states in Co-Antidot lattices of â ‰50 nm thickness and â ‰150 nm inter-Antidot distance. Micromagnetic simulations were applied to investigate the magnetization states around individual antidots during the reversal process. The reversal processes predicted by micromagnetics were confirmed by experimental observations. Magnetization reversal in these antidots occurs via field driven transition between 3 elementary magnetization states-termed G, C and Q. These magnetization states can be described by vectors, and the reversal process proceeds via step-wise linear operations on these vector states. Rules governing the co-existence of the three magnetization states were empirically observed. It is shown that in an n × n antidot lattice, a variety of field switchable combinations of G, C and Q can occur, indicating programmability of the antidot lattices.

    Original languageEnglish
    Article number41157
    JournalScientific Reports
    Volume7
    DOIs
    Publication statusPublished - 1 Feb 2017

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    Schneider, T., Langer, M., Alekhina, J., Kowalska, E., Oelschlägel, A., Semisalova, A., ... Bali, R. (2017). Programmability of Co-Antidot lattices of optimized geometry. Scientific Reports, 7, [41157]. https://doi.org/10.1038/srep41157