Extracting the dynamic magnetic contrast in time-resolved X-ray transmission microscopy

Taddäus Schaffers*, Thomas Feggeler, Santa Pile, Ralf Meckenstock, Martin Buchner, Detlef Spoddig, Verena Ney, Michael Farle, Heiko Wende, Sebastian Wintz, Markus Weigand, Hendrik Ohldag, Katharina Ollefs, Andreas Ney

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

4 Sitaatiot (Scopus)

Abstrakti

Using a time-resolved detection scheme in scanning transmission X-ray microscopy (STXM), we measured element resolved ferromagnetic resonance (FMR) at microwave frequencies up to 10 GHz and a spatial resolution down to 20 nm at two different synchrotrons. We present different methods to separate the contribution of the background from the dynamic magnetic contrast based on the X-ray magnetic circular dichroism (XMCD) effect. The relative phase between the GHz microwave excitation and the X-ray pulses generated by the synchrotron, as well as the opening angle of the precession at FMR can be quantified. A detailed analysis for homogeneous and inhomogeneous magnetic excitations demonstrates that the dynamic contrast indeed behaves as the usual XMCD effect. The dynamic magnetic contrast in time-resolved STXM has the potential be a powerful tool to study the linear and nonlinear, magnetic excitations in magnetic micro-and nano-structures with unique spatial-temporal resolution in combination with element selectivity.

AlkuperäiskieliEnglanti
Artikkeli940
JulkaisuNanomaterials
Vuosikerta9
Numero7
DOI - pysyväislinkit
TilaJulkaistu - 1 heinäkuuta 2019
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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