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Spatially periodic domain wall pinning potentials: Asymmetric pinning and dipolar biasing

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FIG. 1. (a) Cross-sectional schematic showing the general structure of each sample. The lower continuous soft ferromagnetic film and upper hard  multi-layer nanoplatelet stacks are shaded in gray
FIG. 2. (a) Perpendicular component of the stray field beneath positively saturated nanoplatelets (") as calculated at the center of the soft layer in the 200/1000, 200/400, 200/200, and 50/100 arrays
FIG. 4. Stabilized domains in the continuous ferromagnetic layer outside (a,h) and beneath the 200/400 (b,c,i,j), 200/200 (d,e,k,l), and 50/100 (f,g,m,n) arrays following wall propagation under fields parallel (P) or  anti-parallel (AP) to the magnetizatio
FIG. 5. MFM images of the 200/1000 array for driving fields (a) parallel, P (H "), or (b) antiparallel, AP (H #), to the nanoplatelet magnetization (M array "), and in the (c) demagnetized D state (M array ¼ 0, H ") where there are both " a
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