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Berlin 2012 – scientific programme

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DS: Fachverband Dünne Schichten

DS 19: Poster I: Multiferroics (jointly with MA, DF, KR, TT), Spins in organic materials (jointly with MA), FePt Nanoparticles (jointly with MA, MM)

DS 19.83: Poster

Tuesday, March 27, 2012, 12:15–15:15, Poster A

Field-induced magnetization dynamics in dot patterned CoB/Pt multilayer structures — •F. Büttner1,2,3,4, C. Moutafis2,3, A. Bisig1,2,3,6, C.M. Günter4, J. Geilhufe5, M. Schneider4, C. v. Korff Schmiesing4, M. Hantschmann4, M. Riemeier4, J. Mohanty4, S. Schaffert4, J. Franken7, R. Lavrijsen7, H. J. M. Swagten7, H. Stoll8, M. Weigand5,8, M. Kläui1,2,3,6, and S. Eisebitt4,51Uni Mainz, 55128 Mainz, Germany — 2PSI, 5232 Villigen, Switzerland — 3EPF Lausanne, 1015 Lausanne, Switzerland — 4TU Berlin, 10623 Berlin, Germany — 5HZB, 12489 Berlin, Germany — 6Uni Konstanz, 78457 Konstanz, Germany — 7TU Eindhoven, 5612 AZ Eindhoven, Netherlands — 8MPI für Metallforschung, 70569 Stuttgart, Germany

The controlled movement of nanometer sized magnetic domains on the (sub-) nanosecond time scale is of key importance for the development of new magnetic devices in storage and computing technology. While magnetization dynamics in in-plane magnetized materials has been intensely studied, domain sizes are too large for most state-of-the-art applications. In out-of-plane materials, however, we find narrow domains and domain walls, but these are much more sensitive to local pinning, thus making controlled displacements extremely challenging. We present here high resolution magnetic images of low pinning CoB/Pt multilayer structures and demonstrate the suitability of this material for controlled and reproducible field-induced dynamics of the magnetic domains on the nanosecond time scale.

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