Extracting the Dynamic Magnetic Contrast in Time-Resolved X-Ray Transmission Microscopy
AbstractUsing 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. View Full-Text
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Schaffers, T.; Feggeler, T.; Pile, S.; Meckenstock, R.; Buchner, M.; Spoddig, D.; Ney, V.; Farle, M.; Wende, H.; Wintz, S.; Weigand, M.; Ohldag, H.; Ollefs, K.; Ney, A. Extracting the Dynamic Magnetic Contrast in Time-Resolved X-Ray Transmission Microscopy. Nanomaterials 2019, 9, 940.
Schaffers T, Feggeler T, Pile S, Meckenstock R, Buchner M, Spoddig D, Ney V, Farle M, Wende H, Wintz S, Weigand M, Ohldag H, Ollefs K, Ney A. Extracting the Dynamic Magnetic Contrast in Time-Resolved X-Ray Transmission Microscopy. Nanomaterials. 2019; 9(7):940.Chicago/Turabian Style
Schaffers, Taddäus; Feggeler, Thomas; Pile, Santa; Meckenstock, Ralf; Buchner, Martin; Spoddig, Detlef; Ney, Verena; Farle, Michael; Wende, Heiko; Wintz, Sebastian; Weigand, Markus; Ohldag, Hendrik; Ollefs, Katharina; Ney, Andreas. 2019. "Extracting the Dynamic Magnetic Contrast in Time-Resolved X-Ray Transmission Microscopy." Nanomaterials 9, no. 7: 940.
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