Reference : Spin structure of nanocrystalline gadolinium
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Spin structure of nanocrystalline gadolinium
Michels, Andreas mailto [Technische Physik, Universität des Saarlandes, Germany]
Döbrich, Frank [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Elmas, M. [Technische Physik, Universität des Saarlandes, Germany]
Ferdinand, A. [Technische Physik, Universität des Saarlandes, Germany]
Markmann, J. [Technische Physik, Universität des Saarlandes, Germany]
Sharp, M. [GKSS Forschungszentrum, Germany]
Eckerlebe, H. [GKSS Forschungszentrum, Germany]
Kohlbrecher, J. [Paul Scherrer Institute, Switzerland]
Birringer, R. [Technische Physik, Universität des Saarlandes, Germany]
Europhysics Letters
EDP Sciences
Yes (verified by ORBilu)
Les Ulis
[en] We report on magnetic-field–dependent small-angle neutron scattering (SANS) experiments on nanocrystalline inert-gas condensed bulk Gd, which was synthesized using the low-capturing isotope 160Gd. The angular dependency of the scattering cross-section is in very good agreement with recent theoretical predictions. Rather unexpected for this type of material, we observe a "clover-leaf–shaped" anisotropy in the SANS signal, the origin of which is attributed to the existence of longitudinal magnetization fluctuations associated with atomic site disorder and modified coupling inside the defect cores of grain boundaries.

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