Journal of Applied Physics (American Institute of Physics)
The submicron magnetic structure of domain walls in a single‐crystal ironfilm has been studied using a magnetic force microscope(MFM). The MFM tip was sensitized to the component of the field perpendicular to the film plane. The sample examined was a 500‐nm‐thick single‐crystal film of iron,grown by molecular‐beam epitaxy(MBE). Before it was imaged, the film was magnetized along its (in‐plane) easy axis in a 2000‐Oe field. Studies of the domain structure at numerous locations on the filmsurface revealed a rich variety of micromagnetic phenomena. Parallel domain walls, determined to be Bloch walls with a width of 70–100 nm, were seen along the easy axis, spaced roughly 30 μm apart. These appeared to be Bloch walls. Bloch lines were also observed in the walls with an average periodicity of 1.5 μm. This is a value smaller than that predicted for Bloch wall‐line structures. In addition, a pronounced zig–zag structure was observed, as expected from previous Fe whisker observations.
Proksch, R., S. Foss, E. D. Dahlberg and G. Prinz (1994). "Magnetic fine structure of domain walls in iron films observed with a magnetic force microscope." Journal of Applied Physics 75: 5776–5778
This work was partially supported by the ONR, Grant No. NO01489-J-1355. This is contribution 9309 of the Institute for Rock Magnetism. The Institute for Rock Magnetism is supported by grants from the Keck Foundation and the NSF.
Proksch, Roger; Foss, Sherry; Dahlberg, E.D.; Prinz, G..
Magnetic fine structure of domain walls in iron films observed with a magnetic force microscope.
Journal of Applied Physics (American Institute of Physics).
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