Different glassy states, as indicated by a violation of the generalized Cauchy relation.

Krüger, Jan-Kristian; Britz, Th; le Coutre, A.; Baller, Jörg; Possart, W.; Alnot, Patrick; Sanctuary, Roland

Reference : Different glassy states, as indicated by a violation of the generalized Cauchy relation.


	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/10993/13361

Title :	Different glassy states, as indicated by a violation of the generalized Cauchy relation.
Language :	English
Author, co-author :	Krüger, Jan-Kristian [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
	Britz, Th [Universität des Saarlandes, Fakultät für Physik und Elektrotechnik 7.2, Gebäude 38, D-66041 Saarbrücken, Germany]
	le Coutre, A. [> >]
	Baller, Jörg [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
	Possart, W. [Universität des Saarlandes, Fakultät für Chemie, Pharmazie und Werkstoffwissenschaften 8.15, Gebäude 22, D-66041 Saarbrücken, Germany]
	Alnot, Patrick [Laboratoire de Physique des Milieux Ionisés et Applications (LPMIA), UMR 7040-CNRS, Université de Nancy I, Boulevard des Aiguillettes, BP 239 F-54506 Vandoeuvre les Nancy, France]
	Sanctuary, Roland [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Publication date :	2003
Journal title :	New Journal of Physics
Publisher :	Institut of Physics
Volume :	5
Issue/season :	80
Pages :	1-11
Peer reviewed :	Yes (verified by ORBi^lu)
ISSN :	1367-2630
Abstract :	[en] Using Brillouin spectroscopy as a probe for high-frequency clamped acoustic properties, a shear modulus can be measured in addition to the longitudinal modulus already well above the thermal glass transition. On slow cooling of the liquid through the thermal glass transition temperature Tg, both moduli show a kink-like behaviour and the function follows a generalized Cauchy relation (gCR) defined by the linear relation , which completely hides the glass transition. In this work we show experimentally that on fast cooling this linear transformation becomes violated within the glassy state, but that thermal ageing drives the elastic coefficients towards the gCR, i.e. towards a unique glassy state.
Permalink :	http://hdl.handle.net/10993/13361

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