Abstract
It is shown using the technique of double high-speed photography that an external magnetic field triggers the motion of a GdFeCo domain wall with a velocity up to 1.2 km/s. The domain wall velocity increases and levels off with an increase in the amplitude of the driving magnetic-field pulse. In contrast to the earlier experiments on iron ferrites, no influence of femtosecond laser pulses on the domain wall dynamics has been observed, even when the pump pulse energy is sufficient for magnetization reversal.
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ACKNOWLEDGMENTS
We are grateful to T. Toonen, S. Semin, and K. Berkhut for technical support and to O. Tret’yakov for helpful discussions.
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Prabhakara, K.H., Shapaeva, T.B., Yurlov, V.V. et al. Study of Domain Wall Dynamics in GdFeCo Using Double High-Speed Photography. Phys. Solid State 64, 547–553 (2022). https://doi.org/10.1134/S1063783422110105
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DOI: https://doi.org/10.1134/S1063783422110105