[Zurück]

M. Rotter, M. Doerr, M. Loewenhaupt, A. Lindbaum, K. Ziebeck, B. Beuneu:
"Diffraction experiments on GdCu₂In using hot neutrons";
Physica B: Condensed Matter, 350 (2004), S. e63 - e66.

Diffraction experiments on GdCu2In using hot neutrons

M. RotterCorresponding Author Contact Information, E-mail The Corresponding Author, a, b, M. Doerrb, M. Loewenhauptb, A. Lindbaumc, K. Ziebeckd and B. Beuneue

a Institut für Physikalische Chemie, Universität Wien, A-1090, Wien, Austria
b Institut für Festkörperphysik, Technische Universität Dresden, D-01062, Dresden, Germany
c Institut für Festkörperphysik, Technische Universität Wien, A-1040, Wien, Austria
d Department of Physics, Loughborough University, Loughborough, LE 11 3TK, UK
e Laboratoire Léon Brillouin, CEA-CNRS, 91191, Saclay, Gif sur Yvette Cedex, France

Available online 15 April 2004.


Abstract

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 Néel temperature is inferred.

Author Keywords: Hot neutrons; Neutron diffraction; Dipolar anisotropy

75.25.+z; 75.30.Gw

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04970241

doi:10.1016/j.physb.2004.03.018