%0 Conference Paper
%A Ewald, Johannes
%A Wessels, Philipp
%A Wieland, Marek
%A Nisius, Thomas
%A Vogel, Andreas
%A Abbati, Gennaro
%A Baumbach, Stefan
%A Overbuschmann, Johannes
%A Viefhaus, Jens
%A Meier, Guido
%A Wilhein, Thomas
%A Drescher, Markus
%T A full-field transmission x-ray microscope for time-resolved imaging of magnetic nanostructures
%J AIP conference proceedings
%V 1696
%@ 0094-243X
%C Melville, NY
%I Inst.
%M PUBDB-2016-00847
%P 020005
%D 2016
%X 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.
%B 12th International Conference on X-Ray Microscopy
%C 26 Oct 2014 - 31 Oct 2014, Melbourne (Australia)
Y2 26 Oct 2014 - 31 Oct 2014
M2 Melbourne, Australia
%F PUB:(DE-HGF)8 ; PUB:(DE-HGF)16
%9 Contribution to a conference proceedingsJournal Article
%U <Go to ISI:>//WOS:000371671300005
%R 10.1063/1.4937499
%U https://bib-pubdb1.desy.de/record/293870