Poster

PUBDB-2014-04820

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Time-Resolved soft X-ray Microscopy of Magnetic Nanostructures at the P04 Beamline of PETRA III

Wessels, P. (Corresponding Author)>Extern* ; Ewald, J.DESY* ; Wieland, M.>Extern* ; Nisius, T.>Extern* ; Vogel, A. ; Abbati, G.>Extern* ; Baumbach, S. ; Overbuschmann, J. ; Viefhaus, J.DESY* ; Meier, G.>Extern* ; Wilhein, T.>Extern* ; Drescher, M.>Extern*

2014

Abstract: Picosecond magnetization dynamics of small permalloy (Ni80Fe20) elements has been investigated with a new full-field transmission microscope at the soft X-ray beamline P04 of the high brilliance synchrotron radiation source PETRA III.The soft X-ray microscope generates a flat-top illumination field of 20 µm diameter using a grating condenser. A tilted nanostructured magnetic sample can be excited either by making use of a mobile synchronized femtosecond laser system or by a picosecond electric current pulse via a coplanar waveguide. The transmitted light of the sample plane is directly imaged by a micro zone plate with < 65 nm resolution onto a 2D gateable X-ray detector to select one particular bunch in the storage ring that probes the time evolution of the dynamic information successively via XMCD spectromicroscopy in a pump-probe scheme.In the experiments it was possible to generate a homogeneously magnetized state in patterned magnetic layers by a strong magnetic Oersted field pulse and directly observe the destruction and recovery of the initial flux-closure vortex domain patterns. On the rising edge of the magnetic field pulse, high velocities of a central vortex core were discovered exceeding 1 km/s.

Note: OA

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Contributing Institute(s):

1. Uni Hamburg / Experimentalphysik (UNI/EXP)
2. Experimentebetreuung PETRA III (FS-PE)
3. beauftragt von UNI (UNI/CUI)
4. DOOR-User (DOOR)

Research Program(s):

1. PETRA Beamline P04 (POF2-54G14) (POF2-54G14)
2. CUI - Hamburger Zentrum für ultraschnelle Beobachtung (194651731) (194651731)
3. FS-Proposal: I-20120127 (I-20120127) (I-20120127)

Experiment(s):

1. PETRA Beamline P04 (PETRA III)

Appears in the scientific report 2014

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Database coverage:

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