Figure 6: Intrinsic and extrinsic domain wall velocity variations.
From: Correlation between spin structure oscillations and domain wall velocities
The domain wall velocity is plotted as a function of the domain wall azimuthal coordinate, recorded for a full field rotation at (a) f=7 MHz and (b) f=15 MHz, with different start and stop angles 0° (blue circles), 45° (red circles) and 90° (green circles), and constant field amplitude of B=6.8 mT. (a) We observed two static pinning events coinciding in all three velocity curves at around 0.75π rad and 1.75π rad. Furthermore, between π rad and 3π2 rad the domain wall velocities are strongly influenced by the local pinning potential landscape at non zero velocity (pinning dominated domain wall motion). The error of the domain wall velocity is δvdw=±25 m s−1. (b) The domain wall velocity oscillates and no indication of extrinsic pinning can be observed. The error of the domain wall velocity is δvdw=±52 m s−1.
