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Phys. Rev. Lett. 67, 140–143 (1991)

[Issue 1 – 1 July 1991 ]

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Observation of two different oscillation periods in the exchange coupling of Fe/Cr/Fe(100)

J. Unguris, R. J. Celotta, and D. T. Pierce

National Institute of Standards and Technology, Gaithersburg, Maryland 20899

Oscillations of ferromagnetic to antiferromagnetic exchange coupling between two Fe layers separated by a Cr spacer of linearly increasing thickness were investigated by imaging the magnetic domains with scanning electron microscopy with polarization analysis (SEMPA). Up to six oscillations in the coupling with a period of 10–12 Cr layers were observed, and, in the case of an extremely well ordered Cr interlayer, additional oscillations with a period of 2 Cr layers were observed.

©1991 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v67/p140
DOI: 10.1103/PhysRevLett.67.140
PACS: 75.50.Rr, 75.30.Et, 75.70.Cn

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