Fig. 2: Domain wall propagation with magnetic field in the Gr/NiFe device.

a Image of the TEM chip showing the location of the Gr/NiFe interface, b high-resolution TEM image of the Graphene placed on permalloy. Domain wall expansion near the Gr/NiFe interface with in-situ magnetic fields along the c (i–v) +x field sweep and d (i–v) −x field sweep.