Measure of DW flexing

Measurements of Nanoscale DomainWall Flexing in a Ferromagnetic Thin Film.
A. L. Balk, M. E. Nowakowski, M. J. Wilson, D.W. Rench, P. Schiffer, D. D. Awschalom, and N. Samarth
Phys. Rev. Lett. 107, 077205 (2011)

(a) DW flex distance measured for different field duration t ¼ 1, 5, 10, and 15 seconds at T = 88 K in the 20 m device. Inset: Measured slopes plotted against t showing the onset of DW creep at t > 12 s. (b) Pinning site density measured at a constant t = 8 s for both devices. (c) Arrhenius plot of the pinning force, demonstrating the thermal deactivation energy for the pinning sites. (d) DW displacement for a field application of 1 Oe showing the time response of the measurement.