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Phys. Rev. Lett. 79, 4270 - 4273 (1997)

Long-Range Exchange Bias across a Spacer Layer

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N. J. Gökemeijer, T. Ambrose, and C. L. Chien
Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, Maryland 21218

Received 22 July 1997

Ferromagnet (FM)/antiferromagnet (AF) exchange bias, heretofore considered due to nearest-neighbor exchange coupling at the FM/AF interface, has been found to be long range. Using trilayers of FM/spacer/AF with Ag, Au, and Cu as spacer layer materials, the strength of the observed exchange coupling decays exponentially and extends to as much as 50 Å.


©1997 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.79.4270
DOI: 10.1103/PhysRevLett.79.4270
PACS: 75.70.Cn, 75.30.Gw

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