Magnetic switching of nanoscale antidot lattices

Beilstein Journal of Nanotechnology

Ulrich Nowak¹  Maxim Skripnik¹  Kristof M. Lebecki¹  Paul Ziemann²  Ulf Wiedwald²  Felix Haering²  Joachim Gräfe³  Gisela Schütz³  Eberhard Goering³ 

[1] Department of Physics, University of Konstanz, 78457 Konstanz, Germany;Institute of Solid State Physics, Ulm University, Albert-Einstein-Allee 11, 89069 Ulm, Germany;Max-Planck-Institute for Intelligent Systems, Heisenbergstr. 3, 70569 Stuttgart, Germany;

关键词: antidot lattice;    first-order reversal curves;    Kerr microscopy;    magnetic nanostructures;    magnetic switching;    micromagnetic simulations;    plasma etching;    spin ice;    X-ray microscopy;   

DOI  :  10.3762/bjnano.7.65

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown