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Open Access Publications from the University of California

Asymmetry in elementary events of magnetization reversal in a ferromagnetic/antiferromagnetic bilayer

  • Author(s): Nikitenko, VI
  • Gornakov, VS
  • Shapiro, AJ
  • Shull, RD
  • Liu, K
  • Zhou, SM
  • Chien, CL
  • et al.

Real-time magneto-optical indicator film images reveal distinct asymmetry in the motion of a single domain wall in a wedged-NiFe/uniform-FeMn bilayer due to the nucleation and behavior of an exchange spring in the antiferromagnetic layer. Magnetization reversal from the ground state begins at the thick end of the wedge where the exchange anisotropy field (HE) is minimal and the magnetostatic field (HMS) is maximal, whereas reversal into the ground state begins from the thin end where HE is maximal and HE is minimal. © 2000 The American Physical Society.

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