Regensburg 2016 – scientific programme
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MA: Fachverband Magnetismus
MA 16: Magnetization and Demagnetization Dynamics I
MA 16.9: Talk
Tuesday, March 8, 2016, 11:45–12:00, H34
Magnetization Dynamics in Nanostructured Ni80Fe20 Trilayers — •Tobias Schneider1,2,3, Kilian Lenz2, Jürgen Lindner2, Bernd Scheumann2, Jürgen Fassbender2,4, and Ilya N. Krivorotov1 — 1Department of Physics and Astronomy, University of California, Irvine, California 92697, USA — 2Helmholtz-Zentrum Dresden - Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstrasse 400, 01328 Dresden, Germany — 3Institute for Physics of Solids, Technische Universität Dresden, Zellescher Weg 16, 01069 Dresden, Germany — 4Institute of Physics, Technische Universität Chemnitz, 09107 Chemnitz, Germany
Spin wave spectra of structured layered systems are interesting for fundamental research since such systems provide great opportunities to investigate spin wave boundary conditions derived for a single nanowire. Therefore precise measurements of the spin wave spectra are necessary. Here, we present electrically detected ferromagnetic resonance measurements of the spin wave spectrum of a Ni80Fe20 trilayer nanowire. The trilayer nanowire with a width of 800 nm was produced by electron beam lithography. The measured spin wave spectra for the easy and hard axis are compared to micromagnetic simulations to understand the magnetization dynamics in detail. The spin wave modes in this system can be divided into acoustic and optical modes known from interlayer exchange coupled films. Funding by the DFG/NSF in the framework of the Materials World Network program is gratefully acknowledged. This work was also supported by the PROMOS program of the TU Dresden.