Energy of One‐Dimensional Domain Walls in Ferromagnetic Films

摘要: The energy of a one‐dimensional 180° domain wall in ferromagnetic film is minimized for all possible configurations the magnetization distribution wall, using an approximate expression magnetostatic self‐energy. It shown analytically that there no solution other than Neel or Bloch wall. There is, however, some degeneracy, which indicates breakdown calculation, region parameter values where cross‐tie walls are observed experimentally. this approximation to be rather close absolute minimum computed by Brown and LaBonte. found have infinitely long tail, behavior being tanh. Using functional form minimization exact expressions, it at most few percent below previous estimations.