Phys. Rev. B 35, 3679–3682 (1987)Random-field model of exchange anisotropy at rough ferromagnetic-antiferromagnetic interfaces
A field-asymmetric offset of the hysteresis loop in ferromagnetic-antiferromagnetic sandwiches, one of the manifestations of so-called exchange anisotropy, can be predicted from the presence of random interface roughness giving rise to a random field acting on the interface spins. The antiferromagnet breaks up into domains of size determined by the competition of exchange and an additional uniaxial in-plane anisotropy, and this size sets the scale for averaging of the random field. © 1987 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.35.3679
DOI:
10.1103/PhysRevB.35.3679
PACS:
75.70.Kw, 75.10.-b, 75.50.Ee, 75.60.Ej
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