Diffraction experiments on GdCu2In using hot neutrons

Gd compounds with nonmagnetic partner elements are attractive probes for evaluating magnetic exchange interactions. In the Gd3+ ion the f-electrons have zero angular momentum with a spherical charge density. Therefore the crystal-field interaction is negligible. Compounds with one Gd atom per primit...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2004-07, Vol.350 (1-3), p.E63-E66
Main Authors: Rotter, M, Doerr, M, Loewenhaupt, M, Lindbaum, A, Ziebeck, K, Beuneu, B
Format: Article
Language:English
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Summary:Gd compounds with nonmagnetic partner elements are attractive probes for evaluating magnetic exchange interactions. In the Gd3+ ion the f-electrons have zero angular momentum with a spherical charge density. Therefore the crystal-field interaction is negligible. Compounds with one Gd atom per primitive unit cell deserve special interest because their magnetic anisotropy can be calculated from first principles provided the classical dipole-dipole interaction dominates. We investigated the magnetic structure of the Heusler compound GdCu2In by neutron diffraction and find a complex antiferromagnetic order. Using numerical methods it is possible to interpret the data within the dipolar model. A spin reorientation occurring just below the Neel temperature is inferred.
ISSN:0921-4526
DOI:10.1016/j.physb.2004.03.018