Volume 49, Number 1, January I 2000
|Page(s)||92 - 98|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 September 2002|
Element-specific magnetic order and competing interactions in
Institut für Festkörperforschung des Forschungszentrums Jülich 52425 Jülich, Germany
2 Ames Laboratory, Iowa State University - Ames, Iowa 50010, USA
3 Labor für Festkörperphysik, ETH Hönggerberg - CH-8093 Zürich, Switzerland
4 Institut Laue Langevin - BP 156, 38042 Grenoble Cedex 9, France
Accepted: 22 October 1999
We report on the determination of element-specific magnetic order for a mixed crystal by means of X-ray resonance exchange scattering. For the first time, a different temperature dependence of the sublattice magnetization of two lanthanide ions was observed. With model calculations we were able to reproduce the measured temperature dependence of the reduced sublattice magnetization. We can show that competing magnetic interactions lead to the observed effects and can reveal the frustration mechanism.
PACS: 75.25.+z – Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source, X-ray scattering, etc.) / 78.70.Ck – X-ray scattering
© EDP Sciences, 2000
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