A full-field transmission x-ray microscope for time-resolved imaging of magnetic nanostructures
AIP Conference Proceedings. Bd. 1696. H. 1. Melville, NY: American Institute of Physics 2016 020005
Erscheinungsjahr: 2016
ISBN/ISSN: 0094-243X
Publikationstyp: Zeitschriftenaufsatz (Konferenzbeitrag)
Sprache: Englisch
Doi/URN: 10.1063/1.4937499
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Inhaltszusammenfassung
Sub-nanosecond 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 by a picosecond electric current pulse via a coplanar waveguide. The transmitted light of th...Sub-nanosecond 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 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 of 200 ps duration and directly observe the recovery to the initial flux-closure vortex patterns.» weiterlesen» einklappen
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DDC Sachgruppe:
Physik
