Berlin 2018 – wissenschaftliches Programm
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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur
KFM 27: Postersession KFM
KFM 27.24: Poster
Donnerstag, 15. März 2018, 15:00–17:00, Poster E
Ptychography goes magnetic: Developing direct magnetic imaging with hard X-rays at PETRA III's P09 — •Florian Heinsch1,2, Felix Wittwer3, Sonia Francoual3, Dennis Brückner3, Maik Kahnt3, Martin Seyrich3, David Reuther3, Martin Zwiebler2, and Jochen Geck2 — 1HZDR, Dresden, Germany — 2TU Dresden, Dresden, Germany — 3DESY, Hamburg, Germany
X-rays are an ideal probe for non-destructive imaging of a bulk-sample's structure, featuring high spatial resolution and possible element sensitivity. Our goal is to combine these properties with the magnetic sensitivity provided by the X-ray absorption process in order to image magnetic properties with nanometer resolution.
We present the results of a first experiment at the magnetic scattering beamline P09 of PETRA III. All additionally required components, including focusing lenses, could be successfully integrated in the beam path with a stability that allowed for conventional ptychography with a resolution of at least 60nm. Subsequently it will be possible to directly map out the XMCD of a given thin sample. Therefore the difference of two ptychograms with opposing circularly polarized light needs to be compared. First results are presented and an outlook is given on the way to imaging of magnetic domains by magnetic ptychography at PETRA III.