Grain-boundary-induced spin disorder in nanocrystalline gadolinium

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

doi:10.1088/0953-8984/21/15/156003

Reference : Grain-boundary-induced spin disorder in nanocrystalline gadolinium


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/10993/530

Title :	Grain-boundary-induced spin disorder in nanocrystalline gadolinium
Language :	English
Author, co-author :	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, Saarbrücken, Germany]
	Ferdinand, A. [Technische Physik, Universität des Saarlandes, Saarbrücken, Germany]
	Markmann, J. [Technische Physik, Universität des Saarlandes, Saarbrücken, Germany]
	Sharp, M. [GKSS Forschungszentrum, Geesthacht, Germany]
	Eckerlebe, H. [GKSS Forschungszentrum, Geesthacht, Germany]
	Kohlbrecher, J. [Paul Scherrer Institute, Villigen, Switzerland]
	Birringer, R. [Technische Physik, Universität des Saarlandes, Saarbrücken, Germany]
	Michels, Andreas [Technische Physik, Universität des Saarlandes, Saarbrücken, Germany]
Publication date :	2009
Journal title :	Journal of Physics : Condensed Matter
Publisher :	Institute of Physics
Volume :	21
Issue/season :	15
Pages :	1560031-1560035
Peer reviewed :	Yes (verified by ORBi^lu)
ISSN :	0953-8984
e-ISSN :	1361-648X
City :	Bristol
Country :	United Kingdom
Abstract :	[en] Based on experimental magnetic-field-dependent neutron scattering data, we have calculated the autocorrelation function of the spin misalignment of nanocrystalline 160gadolinium. The analysis suggests the existence of two characteristic length scales in the spin system: the smaller one is about 5 nm and is attributed to the defect cores of the grain boundaries, whereas the larger length scale is of the order of the average crystallite size D = 21 nm and presumably describes the response of the magnetization to the magnetic anisotropy field of the individual crystallites.
Permalink :	http://hdl.handle.net/10993/530
DOI :	10.1088/0953-8984/21/15/156003

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