Dresden 2011 – scientific programme
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MA: Fachverband Magnetismus
MA 36: Micro- and Nanostructured Magnetic Materials III
MA 36.8: Talk
Wednesday, March 16, 2011, 16:30–16:45, HSZ 103
Magnetic Films on Nanoperforated Templates for Percolated Perpendicular Media — •Carsten Schulze1, Marco Faustini2, Herbert Schletter1, Matthias U. Lutz3, Michael Hietschold1, Denys Makarov1,3, and Manfred Albrecht1 — 1Institute of Physics, Chemnitz University of Technology, 09107 Chemnitz, Germany — 2Laboratoire de Chimie de la Matière Condensée de Paris, Université Pierre et Marie Curie-Paris 6, CNRS, 75252 Paris cedex 05, France — 3IFW Dresden, Helmholtzstr. 20, 01069 Dresden, Germany
A study on the magnetization reversal in Co/Pt multilayers with perpendicular magnetic anisotropy deposited onto membranes with densely distributed perforations is presented. It was shown that the magnetic domain walls are pinned at the inhomogeneities provided by perforations with sizes down to 17 nm [1, 2], suggesting a possible application of such a system for magnetic data storage as a recording scheme called percolated perpendicular medium (PPM) [3]. However, for the application as a recording medium the size of the perforations has to be further reduced. In this regard, the influence of the perforation size with respect to the domain wall width on the pinning strength will be discussed.
[1] D. Makarov et al., IEEE Trans. Magn. 45 (2009) 3515.
[2] C. Schulze et al., Nanotechnology 21 (2010) 495701.
[3] D. Suess et al., J. Appl. Phys. 99 (2006) 08G905.