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001     299584
005     20211110134132.0
037 _ _ |a PUBDB-2016-01995
041 _ _ |a English
088 1 _ |a DESY-THESIS-2016-012
088 _ _ |a DESY-THESIS-2016-012
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100 1 _ |a Gurieva, Tatiana
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245 _ _ |a Investigation of the field dependent spin structure of exchange coupled magnetic heterostructures
|f 2009-11-23 - 2016-04-27
260 _ _ |a Hamburg
|c 2016
|b Verlag Deutsches Elektronen-Synchrotron
300 _ _ |a 151
336 7 _ |a Output Types/Dissertation
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336 7 _ |a Dissertation / PhD Thesis
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502 _ _ |a Universität Hamburg, Diss., 2016
|c Universität Hamburg
|b Dr.
|d 2016
520 _ _ |a This thesis describes the investigation of the field dependent magnetic spin structure of an antiferromagnetically (AF) coupled Fe/Cr heterostructure sandwiched between a hardmagnetic FePt buffer layer and a softmagnetic Fe top layer. The depth-resolved experimental studies of this system were performed via Magneto-optical Kerr effect (MOKE), Vibrating Sample Magnetometry (VSM) and various measuring methods based on nuclear resonant scattering (NRS) technique. Nucleation and evolution of the magnetic spiral structure in the AF coupled Fe/Cr multilayer structure in an azimuthally rotating external magnetic field were observed using NRS. During the experiment a number of time-dependent magnetic side effects (magnetic after-effect, domain-wall creep effect) caused by the non-ideal structure of a real sample were observed and later explained. Creation of the magnetic spiral structure in rotating external magnetic field was simulated using a one-dimensional micromagnetic model.The cross-sectional magnetic x-ray diffraction technique was conceived and is theoretically described in the present work. This method allows to determine the magnetization state of an individual layer in the magnetic heterostructure. It is also applicable in studies of the magnetic structure of tiny samples where conventional x-ray reflectometry fails.
536 _ _ |a 6212 - Quantum Condensed Matter: Magnetism, Superconductivity (POF3-621)
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700 1 _ |a Roehlsberger, Ralf
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700 1 _ |a Ruebhausen, Michael
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