A full-field transmission x-ray microscope for time-resolved imaging of 
magnetic nanostructures

Ewald, J.; Wessels, P.; Wieland, M.; Nisius, T.; Vogel, A.; Abbati, G.; Baumbach, S.; Overbuschmann, J.; Viefhaus, J.; Meier, G.; Meier, Guido; Wilhein, T.; Drescher, M.

doi:10.1063/1.4937499

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A full-field transmission x-ray microscope for time-resolved imaging of magnetic nanostructures

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Meier, Guido
Dynamics and Transport in Nanostructures, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

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http://aip.scitation.org/doi/abs/10.1063/1.4937499
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Zitation

Ewald, J., Wessels, P., Wieland, M., Nisius, T., Vogel, A., Abbati, G., et al. (2016). A full-field transmission x-ray microscope for time-resolved imaging of magnetic nanostructures. In AIP Conference Proceedings. AIP Publishing. doi:10.1063/1.4937499.

Zitierlink: https://hdl.handle.net/11858/00-001M-0000-002C-4724-F

Zusammenfassung

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.