Format:
1 Online-Ressource (iv, 121 Seiten, 41744 KB)
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Illustrationen, Diagramme
Content:
Approaching physical limits in speed and size of today's magnetic storage and processing technologies demands new concepts for controlling magnetization and moves researches on optically induced magnetic dynamics. Studies on photoinduced magnetization dynamics and their underlying mechanisms have been primarily performed on ferromagnetic metals. Ferromagnetic dynamics bases on transfer of the conserved angular momentum connected with atomic magnetic moments out of the parallel aligned magnetic system into other degrees of freedom.In this thesis the so far rarely studied response of antiferromagnetic order to ultra-short optical laser pulses in a metal is investigated. The experiments were performed at the FemtoSpex slicing facility at the storage ring BESSY II, an unique source for ultra-short elliptically polarized x-ray pulses. Laser-induced changes of the 4f-magnetic order parameter in ferro- and antiferromagnetic dysprosium (Dy), were studied by x-ray methods, which yield directly comparable quantities. ...
Note:
Dissertation Universität Potsdam 2017
Additional Edition:
Erscheint auch als Druck-Ausgabe Thielemann-Kühn, Nele Optically induced ferro- and antiferromagnetic dynamics in the rare-earth metal dysprosium Potsdam, 2017
Language:
English
Keywords:
BESSY II
;
Dysprosium
;
Ferromagnetismus
;
Antiferromagnetismus
;
Photoanregung
;
Röntgenlaser
;
Femtosekundenbereich
;
Ultraschneller Prozess
;
Röntgenspektroskopie
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Hochschulschrift
URN:
urn:nbn:de:kobv:517-opus4-402994
URL:
https://nbn-resolving.org/urn:nbn:de:kobv:517-opus4-402994
URL:
https://d-nb.info/1218402881/34
Author information:
Föhlisch, Alexander
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