Abstract
AbstractIn Part I [2] it was shown that Bloch walls in thin magnetic films should have a vortex‐like asymmetric and largely stray‐field‐free structure. A rigorous proof of the existence of an analogous asymmetric model for the Néel wall has not yet been given. Therefore, the earlier calculations have been extended in two directions: (i) Bloch walls are calculated also for applied fields. These walls lose the remaining (y) symmetry found in the 180° Bloch walls. The calculations show that their energy increases with increasing applied field. (ii) Néel walls are constructed for the entire interesting range of film thicknesses and applied field values, thus forming a continuous transition from the symmetrical Néel wall at small thicknesses and high fields to the walls with an asymmetric core at large thicknesses and small fields. In fields larger than 0.3 (2 K/Is) only Néel walls are stable for all thicknesses; they may be symmetrical or asymmetric, depending on film thickness and the magnitude of the field. For all walls wall widths are calculated for the purpose of comparison with electron microscope observations.
Published Version
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