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In-plane magnetisation anisotropy of FeCr superlattices with biquadratic exchange coupling

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Journal of Magnetism and Magnetic Materials

Volumes 226-230, Part 2
May 2001
Pages 1811-1813

DOI: 10.1016/S0304-8853(00)01138-0
PII: S0304-8853(00)01138-0
Copyright © 2001 Elsevier Science B.V. All rights reserved.

V. V. Ustinov ^,, M. A. Milyaev, L. N. Romashev, T. P. Krinitsina and E. A. Kravtsov

Institute of Metal Physics, Ural Division of the Russian Academy of Sciences, 18 Sofia Kovalevsky St., Ekaterinburg, 620219, Russia

Available online 14 November 2001.

Magnetisation anisotropy in non-collinear ordered (0 0 1)FeCr multilayers has been studied. It was found that the interplay between strong biquadratic exchange coupling and fourfold anisotropy causes change in magnetisation `easy' and `hard' axes during the magnetisation process. A simple phenomenological approach for extracting anisotropy and exchange parameters from magnetisation curves has been suggested.

Author Keywords: Multilayers; Anisotropy_¯¯magnetisation process; Exchange coupling_¯¯non-collinear

Materials: Fe/Cr multilayers

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(5K)
Fig. 1. Magnetisation curves for the sample [Cr(14 Å)Fe(70 Å)]₁₂ measured along easy and hard axes. The arrows indicate the magnetic field values used for estimating exchange and anisotropy parameters.

(11K)
Fig. 2. Magnetisation anisotropy of the [Cr(14 Å)Fe(70 Å)]₁₂ multilayer measured using rotation of the magnetic field in the layers plane. In figure are shown the measured (points) and calculated (lines) angle dependencies of magnetisation.

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Corresponding author. Tel.: +7-3432-444471; fax: +7-3432-745-244; email: ustinov@imp.uran.ru

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Journal of Magnetism and Magnetic Materials
Volumes 226-230, Part 2
May 2001
Pages 1811-1813

267 of 374

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