Film Stress and Domain Wall Pinning in Sesquilayer Iron Films on W(110)

Structure and perpendicular magnetization of Fe/Ni(111) bilayers on W(110)

“…This behavior is different from the magnetism of the bare Ni and Fe monolayers: inplane magnetization has been reported 7 for 2 ML Ni on W͑110͒, and for 1 ML Fe on W͑110͒. 8 In conclusion, we suggest that more than 1 ML of Ni is necessary for the Fe induced spin reorientation to occur.…”

Stress and structure of Ni monolayers on W(110): The importance of lattice mismatch

“…Note, that a surface stress of 1 N/m translates into an adsorbate-induced change of the surface energy of order tenths of an eV per surface atom, clearly resembling a significant factor in the substrate-film energetics. Not only for Ni, but also for Fe, 15 Co, and Cu on W͑110͒ we measured compressive stress in the pseudomorphic range where tensile stress is expected from strain arguments. Therefore, the application of a general concept like surface stress in the combined system-substrate surface plus adsorbate atoms-seems promising to explain the stress behavior in the submonolayer range.…”

Domain wall pinning in notched nanowires

“…As thickness increases, complex structure like vortex may appear in the system [27], and the depinning mechanism also becomes complex. Moreover, the thickness inhomogeneity in real materials may induce an additional coercive field [3,6]. (2) The volume charges' contribution to the magnetostatic field can be ignored.…”

“…Although much knowledge of DW pinning in a notched wire has been obtained from experiments and micromagnetic simulations , our current understanding of DW pinning and depinning is quite limited. It is numerical [18] and experimental [3,10,12,15] fact that thickness inhomogenities [3] and geometrical constrictions [10,12,15] can pin a DW. The depinning field depends on the geometry of the constrictions.…”