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Two typical anisotropy geometries in Fe films on cubic substrates, with an additional uniaxial anisotropy along (a) the  direction and (b) the  direction.
(Color online) (a) RHEED pattern and (b) STM image of the as-grown film. (c) STM image of the Fe film after annealing at and (d) after ion sputtering for . The sputtering direction is along the azimuthal Fe  direction. For the STM images, the color contrast (dark to bright) corresponds to 3.9, 1.7, and for (b), (c), and (d), respectively.
Longitudinal and transverse MOKE loops for the film without sputtering (sample A) at (a) , (b) , and (c) and for the sputtered film (sample B) at (d) , (e) , and (f) .
Experimental one-jump switching field (solid dots) and the two-jump switching fields (hollow dots) and (hollow squares), for (a) sample A and (b) sample B, as a function of the applied field orientation . The full curves correspond to the theoretical model calculations. The insets show the experimental data plotted in polar coordinates, where the shaded areas correspond to the occurrence of the one-jump process.
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