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Physica B: Condensed Matter
Volumes 276-278, March 2000, Pages 684-685

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PII: S0921-4526(99)01707-X
Copyright © 2000 Elsevier Science B.V. All rights reserved.

Magnetic order and the spin-flop transition in Fe/Cr superlattices

K. Temst ^,^,^a, E. Kunnen^a, V. V. Moshchalkov^a, H. Maletta^b, H. Fritzsche^b and Y. Bruynseraede^a

^a Laboratorium voor Vaste-Stoffysica en Magnetisme, Katholieke Universiteit Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
^b Hahn-Meitner-Institut, BENSC, Glienicker Strasse 100, D-14109 Berlin, Germany

Available online 2 May 2000.

Abstract

We have studied the structural and magnetic properties of MBE-prepared epitaxial Fe/Cr (001) oriented superlattices. The samples consist of 20 periods with 2.5 nm Fe and 1.3 nm Cr individual layer thicknesses. The samples were characterized by X-ray diffraction, while the magnetic properties were determined by magnetoresistivity, magneto-optical Kerr effect, and polarized neutron reflectivity measurements. The transition from antiparallel to parallel alignment of the magnetizations in adjacent Fe layers was investigated using polarized neutron reflectivity measurements while applying a field parallel to the layers. A spin-flop transition due to the fourfold anisotropy in the Fe layers was observed at a field of 200 Oe.

Author Keywords: Multilayers; Reflectometry; Magnetic anisotropy; Magnetoresistance

Article Outline

References

(3K)
Fig. 1. Zero-field neutron reflectivity scan of the Fe/Cr superlattice, showing magnetic and structural modulation.

(3K)
Fig. 2. Intensity of the magnetic modulation peak (at =1.75°), as a function of applied field using neutron polarization analysis. The sudden transition from NSF to SF scattering is due to the spin-flop reorientation of the magnetization.

References

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2. A. Schreyer et al.. Phys. Rev. B 52 (1995), p. 16066. Abstract-INSPEC | $Order Document | Full-text via CrossRef

3. D.L. Mills. Phys. Rev. Lett. 20 (1968), p. 18. Full-text via CrossRef

4. R.W. Wang et al.. Phys. Rev. Lett. 72 (1994), p. 920. Abstract-INSPEC | $Order Document | Full-text via CrossRef

Corresponding author. Tel.: +32-16-32-7620; fax: +32-0-16-32-7983; email: kristiaan.temst@fys.kuleuven.ac.be

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Physica B: Condensed Matter
Volumes 276-278, March 2000, Pages 684-685

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