We investigate the rich magnetic switching properties of nanoscale antidot lattices in the 200 nm regime. In-plane magnetized Fe, Co, and Permalloy (Py) as well as out-of-plane magnetized GdFe antidot films are prepared by a modified nanosphere lithography allowing for non-close packed voids in a magnetic film. We present a magnetometry protocol based on magneto-optical Kerr microscopy elucidating the switching modes using first-order reversal curves. The combination of various magnetometry and magnetic microscopy techniques as well as micromagnetic simulations delivers a thorough understanding of the switching modes. While part of the investigations has been published before, we summarize these results and add significant new insights in the magnetism of exchange-coupled antidot lattices.

Department of Physics University of Konstanz 78457 Konstanz Germany

Department of Physics University of Konstanz 78457 Konstanz Germany; IT4Innovations Centre VSB Technical University of Ostrava Czech Republic

Institute of Solid State Physics Ulm University Albert Einstein Allee 11 89069 Ulm Germany

Institute of Solid State Physics Ulm University Albert Einstein Allee 11 89069 Ulm Germany; Faculty of Physics and Center for Nanointegration Duisburg Essen University of Duisburg Essen Lotharstr 1 47057 Duisburg Germany

Max Planck Institute for Intelligent Systems Heisenbergstr 3 70569 Stuttgart Germany

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