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Depth profile of uncompensated spins in an exchange bias system

  • Author(s): Roy, S.;
  • Fitzsimmons, M.R.;
  • Park, S.;
  • Dorn, M.;
  • Petracic, O.;
  • Roshchin, Igor V.;
  • Li, Zhi-Pan;
  • Morales, R.;
  • Misra, A.;
  • Zhang, X.;
  • Chesnel, K.;
  • Kortright, J.B.;
  • Sinha, S.K.;
  • Schuller, Ivan K.
  • et al.
Abstract

We have used the unique spatial sensitivity of polarized neutron and soft x-ray beams in reflection geometry to measure the depth dependence of magnetization across the interface between a ferromagnet and and antiferromagnet. The new uncompensated magnetization near the interface responds to applied field, while the uncompensated spins in the antiferromagnetic bulk are pinned, thus providing a means to establish exchange bias.

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