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Journal of Applied Physics -- April 15, 1991 -- Volume 69, Issue 8, pp.
4789-4791

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Layered magnetic structures: Antiferromagnetic-type interlayer coupling and
magnetoresistance due to antiparallel alignment

     P. Grünberg, S. Demokritov, A. Fuss, M. Vohl, and J. A. Wolf
     Forschungszentrum Jülich, IFF, Postfach 1913, D-5170 Jülich, Federal
     Republic of Germany

Layered Fe/Cr structures are known to display antiferromagnetic-type
interlayer coupling and a new magnetoresistance (MR) effect due to
antiparallel magnetization alignment. The strength of the coupling is found
to be similar in multilayered structures and in double layers. The
oscillatory behavior of the coupling, previously found by Parkin, More, and
Roche [Phys. Rev. Lett. 64, 2304 (1990)] on sputtered polycrystalline
samples, is here confirmed for epitaxial samples, obtained by thermal
evaporation. The new MR effect is interpreted as due to a spin-dependent
scattering of the electrons at the Fe-Cr interfaces. The investigations
have been extended to Fe/V, Fe/Mn, Fe/Cu, Co/Au, Co/Cr, and Co/Cu
structures where the antiparallel alignment of the ferromagnetic layers is
obtained via hysteresis effects. A MR effect due to antiparallel alignment,
which is strong for Co/Au and Co/Cu but weak in the other cases, has been
found. Journal of Applied Physics is copyrighted by The American Institute
of Physics.

doi:10.1063/1.348230
PACS: 75.70.-i, 73.50.Jt        Additional Information

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