Induced magnetic moments at a ferromagnet-antiferromagnet interface

A. Hoffmann, J. W. Seo, M. R. Fitzsimmons, H. Siegwart, J. Fompeyrine, J. P. Locquet, J. A. Dura, C. F. Majkrzak

Research output: Contribution to journalArticlepeer-review


We have studied the magnetization depth profile in a Co/LaFeO3 exchange bias system with polarized neutron reflectometry. In the exchange biased state we observe differences between the reflectivity profiles when the magnetization of the ferromagnetic layer is saturated either parallel or antiparallel to the cooling field. This difference vanishes above the blocking temperature. Since the reflectivity profiles are directly related to the Fourier components of the magnetization depth profile, this data suggest that a net moment develops within the antiferromagnetic layer close to the interface with the ferromagnetic layer, which remains unchanged during the magnetic-field cycling and is coupled antiferromagnetically to the ferromagnet.

Original languageEnglish (US)
Article number220406
Pages (from-to)2204061-2204064
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number22
StatePublished - Dec 1 2002
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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