Reference : The generalized Cauchy relation: a probe for local structure in materials with isotro...

	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics Engineering, computing & technology : Materials science & engineering
	To cite this reference:	http://hdl.handle.net/10993/13356

Title :	The generalized Cauchy relation: a probe for local structure in materials with isotropic symmetry.
Language :	English
Author, co-author :	Bactavatchalou, R. [Laboratoire Européen de Recherche Universitaire Saarland-Lorraine-Luxembourg at Universität des Saarlandes]
	Alnot, Patrick [Université Henri Poincaré, Nancy I.]
	Baller, Jörg [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
	Kolle, M. [> >]
	Müller, Ulrich [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
	Philipp, Martine [> >]
	Possart, Wulff [> >]
	Rouxel, D. [> >]
	Sanctuary, Roland [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
	Tschöpe, A. [> >]
	Vergnat, Ch [> >]
	Wetzel, Berndt [Institut für Verbundwerkstoffe TU Kaiserslautern 67663 Kaiserslautern]
	Krüger, Jan-Kristian [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Publication date :	2006
Journal title :	Journal of Physics. Conference Series
Publisher :	IOP Publishing Ltd.
Volume :	40
Pages :	111-117
Peer reviewed :	Yes (verified by ORBilu)
ISSN :	1742-6588
Abstract :	[en] The elastic properties of the isotropic state of condensed matter are given by the elastic constants ell and c44. In the liquid state the static shear stiffness c44 vanishes whereas at sufficient high probe frequencies a dynamic shear stiffness may appear. In that latter case the question about the existence of a Cauchy relation appears. It will be shown that a pure Cauchy relation can appear only under special conditions which are rarely fulfilled. For all investigated materials, including ceramics, liquids and glasses, a linear relation between ell and c44 called generalized Cauchy relation is observed, which, surprisingly, follows a linear transformation.
Permalink :	http://hdl.handle.net/10993/13356
DOI :	10.1088/1742-6596/40/1/014

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