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Phys. Rev. Lett. 87, 107201 (2001)

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Origin of Biquadratic Coupling in Fe/Cr(100) Superlattices

J. Meersschaut,^1,2 C. L'abbé,¹ M. Rots,² and S. D. Bader¹

¹Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, Illinois 60439
²Instituut Kern-en Stralingsfysica, K. U. Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium

(Received 18 April 2001; published 16 August 2001)

We investigate the magnetic properties of a (100) oriented [Fe(1.7  nm)/Cr(8.4  nm)]₁₀ superlattice by means of perturbed angular correlation spectroscopy. The magnetic ordering in the Cr layers is obtained by measuring the magnetic hyperfine interaction at implanted ¹¹¹Cd nuclear probes. We identify dynamic antiferromagnetic spin fluctuations in the Cr layers and show that it gives rise to the biquadratic interlayer coupling. ©2001 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v87/e107201
DOI: 10.1103/PhysRevLett.87.107201
PACS: 75.75.+a, 75.20.-g, 75.50.Ee, 76.80.+y        Additional Information

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