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Magnetic Spatial Non-Uniformities on the Picosecond Timescale

DOI to cite this document:
Acremann, Y. ; Kashuba, A. ; Buess, Matthias ; Pescia, D. ; Back, Christian
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Date of publication of this fulltext: 05 Aug 2009 13:34


The magnetization of a Co disk with an in-plane flux-closure domain structure was subject to a picosecond magnetic field pulse perpendicular to the plane. Images with sub-micron spatial resolution have been recorded every 10 ps which reveal magnetic non-uniformities of the ferromagnetic resonance (FMR) response. A detailed analysis of the images shows a difference in the FMR frequencies of about ...


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