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Journal of Magnetism and Magnetic Materials
Volume 240, Issues 1-3, February 2002, Pages 229-231

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DOI: 10.1016/S0304-8853(01)00775-2
PII: S0304-8853(01)00775-2
Copyright © 2002 Elsevier Science B.V. All rights reserved.

4f–3d exchange coupling in Gd/X/Co (X=Pt, Cr) multilayers

G. Suciu, J. C. Toussaint and J. Voiron ^,

Laboratoire Louis Néel, CNRS, BP 166, 38042- Grenoble Cedex 9, France

Available online 17 October 2001.

Abstract

We have studied the interlayer exchange coupling between Gd and Co through Pt and Cr spacers in a series of multilayers. Magnetization curves have been analyzed with a model, taking into account bilinear and biquadratic interlayer exchange couplings between Gd and Co. The interlayer exchange coupling constants have been determined as a function of the Pt or Cr spacer layer thickness.

Author Keywords: Multilayers; Interlayer exchange coupling; 4f–3d exchange coupling; Magnetization processes; Biquadratic exchange coupling

Article Outline

References

(9K)
Fig. 1. Experimental and simulated magnetization curve, typical of a [Gd/Cr/Co/Cr]₁₄ multilayer with a small Cr thickness (4 Å).

(10K)
Fig. 2. Experimental and simulated magnetization curve, typical of a [Gd/Cr/Co/Cr]₁₄ multilayer with a large Cr thickness (20 Å).

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Fig. 3. Experimental and simulated magnetization curve, typical of a [Gd/Pt/Co/Pt]₁₄ multilayer with Pt spacer layer.

(6K)
Fig. 4. Variation of the bilinear J₁ and biquadratic J₂ exchange coupling constants as a function of the Cr layer thickness, in a series of multilayers of type [Gd/Cr/Co/Cr]₁₄.

(6K)
Fig. 5. Variation of the bilinear J₁ and biquadratic J₂ exchange coupling constants as a function of the Pt thickness, in a series of multilayers of type [Gd/Cr/Co/Cr]₁₄.

References

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Corresponding author. Tel.: +33-4-76-88-79-06; fax: +33-4-76-88-11-91; email: voiron@polycnrs-gre.fr

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Journal of Magnetism and Magnetic Materials
Volume 240, Issues 1-3, February 2002, Pages 229-231

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