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

Johannes Ewald | Zendy; Philipp Wessels | Zendy; Marek Wieland | Zendy; T. Nisius | Zendy; Andreas Vogel | Zendy; Gennaro Abbati | Zendy; Stefan Baumbach | Zendy; Johannes Overbuschmann | Zendy; Jens Viefhaus | Zendy; Guido Meier | Zendy; Thomas Wilhein | Zendy; Markus Drescher | Zendy

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

Author(s) -

Johannes Ewald,

Philipp Wessels,

Marek Wieland,

T. Nisius,

Andreas Vogel,

Gennaro Abbati,

Stefan Baumbach,

Johannes Overbuschmann,

Jens Viefhaus,

Guido Meier,

Thomas Wilhein,

Markus Drescher

Publication year - 2016

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.4937499

Subject(s) - permalloy , microscope , materials science , nanosecond , optics , picosecond , condenser (optics) , synchrotron radiation , magnetization , magnetic field , microscopy , magnetic force microscope , optoelectronics , laser , physics , quantum mechanics , light source

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

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