Abstract
Domains written in thin films of TbFeCo were observed with scanning electron microscopy with polarization analysis (SEMPA). The SEMPA measurements revealed that the rare-earth concentration has a direct effect on the orientation of the surface magnetization which is tilted with respect to the sample normal due to segregation and oxidation processes. The magnetic microstructure of domains in thermal equilibrium was modeled by solving the Landau-Lifshitz-Gilbert equations. The proposed simple model of the surface has a thin layer of Fe-rich material near the surface with magnetic properties different from those in bulk. The surface micromagnetic properties are examined for various surface layer thicknesses and magnetic parameters.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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