  The magnetization in the domain walls (DWs) formed inside the inner core of
the amorphous ferromagnetic microwire is studied within a simple analytical
model proposed. The influence of the ordering in the internal-stress created
outer shell of the wire is included via an effective Dzyaloshinskii-Moriya-like
anisotropy and resulting DW textures have been classified. The model is
applicable to periodically constricted nanowires (whose core-shell magnetic
structure follows from the magnetostatics) as well, which has enabled the
verification of the predictions on DW structure with the micromagnetic
simulations.
