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Phys. Rev. Lett. 77, 1382–1385 (1996)

[Issue 7 – 12 August 1996 ]

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Spin-Density-Wave Antiferromagnetism of Cr in Fe /Cr(001) Superlattices

Eric E. Fullerton and S. D. Bader

Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439-4845

J. L. Robertson

Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393

The antiferromagnetic spin-density-wave (SDW) order of Cr layers in Fe/Cr(001) superlattices was investigated by neutron scattering. For Cr thicknesses from 51 to 190 Å, a transverse SDW is formed for all temperatures below the Néel temperature with a single wave vector Q normal to the layers. A coherent magnetic structure forms with the nodes of the SDW near the Fe-Cr interfaces, and the magnetic coherence length greater than the Cr layer thickness. The results and modeling provide a direct confirmation of the persistence of bulklike antiferromagnetic SDW order in the Cr.

©1996 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v77/p1382
DOI: 10.1103/PhysRevLett.77.1382
PACS: 75.70.Cn, 75.25.+z, 75.50.Ee

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