Spin structure of nanocrystalline gadolinium

Michels, Andreas; Döbrich, Frank; Elmas, M.; Ferdinand, A.; Markmann, J.; Sharp, M.; Eckerlebe, H.; Kohlbrecher, J.; Birringer, R.

doi:10.1209/0295-5075/81/66003

Reference : Spin structure of nanocrystalline gadolinium


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/10993/540

Title :	Spin structure of nanocrystalline gadolinium
Language :	English
Author, co-author :	Michels, Andreas [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]
Publication date :	2008
Journal title :	Europhysics Letters
Publisher :	EDP Sciences
Volume :	81
Pages :	660031-660035
Peer reviewed :	Yes (verified by ORBi^lu)
ISSN :	0295-5075
e-ISSN :	1286-4854
City :	Les Ulis
Country :	France
Abstract :	[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.
Permalink :	http://hdl.handle.net/10993/540
DOI :	10.1209/0295-5075/81/66003

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