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@ARTICLE{Wessels:192473,
author = {Wessels, Philipp and Ewald, Johannes and Wieland, Marek and
Nisius, Thomas and Vogel, Andreas and Viefhaus, Jens and
Meier, Guido and Wilhein, Thomas and Drescher, Markus},
title = {{T}ime-resolved imaging of domain pattern destruction and
recovery via nonequilibrium magnetization states},
journal = {Physical review / B},
volume = {90},
number = {18},
issn = {1098-0121},
address = {College Park, Md.},
publisher = {APS},
reportid = {PUBDB-2014-04077},
pages = {184417},
year = {2014},
note = {OA},
abstract = {The destruction and formation of equilibrium multidomain
patterns in permalloy (Ni80Fe20) microsquares has been
captured using pump-probe x-ray magnetic circular dichroism
(XMCD) spectromicroscopy at a new full-field magnetic
transmission soft x-ray microscopy endstation with
subnanosecond time resolution. The movie sequences show the
dynamic magnetization response to intense Oersted field
pulses of approximately 200-ps root mean square (rms)
duration and the magnetization reorganization to the
ground-state domain configuration. The measurements display
how a vortex flux-closure magnetization distribution emerges
out of a nonequilibrium uniform single-domain state. During
the destruction of the initial vortex pattern, we have
traced the motion of the central vortex core that is ejected
out of the microsquare at high velocities exceeding 1 km/s.
A reproducible recovery into a defined final vortex state
with stable chirality and polarity could be achieved. Using
an additional external bias field, the transient reversal of
the square magnetization direction could be monitored and
consistently reproduced by micromagnetic simulations.},
cin = {UNI/EXP / FS-PE / MPSD / UNI/CUI},
ddc = {530},
cid = {$I:(DE-H253)UNI_EXP-20120731$ / I:(DE-H253)FS-PE-20120731 /
I:(DE-H253)MPSD-20120731 / $I:(DE-H253)UNI_CUI-20121230$},
pnm = {PETRA Beamline P04 (POF2-54G14) / CUI - Hamburger Zentrum
für ultraschnelle Beobachtung (194651731) / FS-Proposal:
I-20120127 (I-20120127)},
pid = {G:(DE-H253)POF2-P04-20130405 / G:(GEPRIS)194651731 /
G:(DE-H253)I-20120127},
experiment = {EXP:(DE-H253)P-P04-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000345640600005},
doi = {10.1103/PhysRevB.90.184417},
url = {https://bib-pubdb1.desy.de/record/192473},
}