TY  - CONF
AU  - Ewald, Johannes
AU  - Wessels, Philipp
AU  - Wieland, Marek
AU  - Nisius, Thomas
AU  - Vogel, Andreas
AU  - Abbati, Gennaro
AU  - Baumbach, Stefan
AU  - Overbuschmann, Johannes
AU  - Viefhaus, Jens
AU  - Meier, Guido
AU  - Wilhein, Thomas
AU  - Drescher, Markus
TI  - A full-field transmission x-ray microscope for time-resolved imaging of magnetic nanostructures
JO  - AIP conference proceedings
VL  - 1696
SN  - 0094-243X
CY  - Melville, NY
PB  - Inst.
M1  - PUBDB-2016-00847
SP  - 020005
PY  - 2016
AB  - 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.
T2  - 12th International Conference on X-Ray Microscopy
CY  - 26 Oct 2014 - 31 Oct 2014, Melbourne (Australia)
Y2  - 26 Oct 2014 - 31 Oct 2014
M2  - Melbourne, Australia
LB  - PUB:(DE-HGF)8 ; PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000371671300005
DO  - DOI:10.1063/1.4937499
UR  - https://bib-pubdb1.desy.de/record/293870
ER  -