Fig. 3: Micromagnetic simulations of the acoustic movement of a magnetic domain wall. | Nature Communications

Fig. 3: Micromagnetic simulations of the acoustic movement of a magnetic domain wall.

From: Moving magnetic domain walls with sound alone

Fig. 3: Micromagnetic simulations of the acoustic movement of a magnetic domain wall.

a Set up with a single transversal DW nucleated in the middle of a FeCo strip where the SAW is delivered from both directions. b Time evolution of the DW position along the nanostrip for several values of the SAW amplitude and propagation direction. c Snapshots of the magnetization configuration 15 ns after activating the SAW, where the color scale represents the magnitude of \({m}_{{{{\rm{x}}}}}\) (red for \({m}_{{{{\rm{x}}}}}=1\), cyan for \({m}_{{{{\rm{x}}}}}=-1\)), for SAW amplitudes of 70 and 105 ppm and opposite propagation directions. d DW average velocity versus the amplitude of the SAW for ideal-smooth and granular nanostrips in both SAW+ and SAW− directions.

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