Journal Article

FZJ-2015-01260

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Excess wing in glass-forming glycerol and LiCl-glycerol mixtures detected by neutron scattering

Gupta, S. (Corresponding Author)FZJ* ; Arend, N.FZJ* ; Lunkenheimer, P. ; Loidl, A. ; Stingaciu, L.FZJ* ; Jalarvo, N.FZJ* ; Mamontov, E. ; Ohl, M.FZJ*

2015
Springer Berlin

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Please use a persistent id in citations: http://hdl.handle.net/2128/8373  doi:10.1140/epje/i2015-15001-0

Abstract: The relaxational dynamics in glass-forming glycerol and glycerol mixed with LiCl is investigated using different neutron scattering techniques. The performed neutron spin echo experiments, which extend up to relatively long relaxation time scales of the order of 10ns, should allow for the detection of contributions from the so-called excess wing. This phenomenon, whose microscopic origin is controversially discussed, arises in a variety of glass formers and, until now, was almost exclusively investigated by dielectric spectroscopy and light scattering. Here we show that the relaxational process causing the excess wing can also be detected by neutron scattering, which directly couples to density fluctuations

Keyword(s): Basic research (1st) ; Key Technologies (1st) ; Condensed Matter Physics (2nd)

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Contributing Institute(s):

1. Neutronenstreuung (ICS-1)
2. JCNS-FRM-II (JCNS (München) ; Jülich Centre for Neutron Science JCNS (München) ; JCNS-FRM-II)
3. Neutronenstreuung (Neutronenstreuung ; JCNS-1)
4. JCNS-SNS (JCNS-SNS)

Research Program(s):

1. 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623) (POF3-623)
2. 551 - Functional Macromolecules and Complexes (POF3-551) (POF3-551)
3. 6215 - Soft Matter, Health and Life Sciences (POF3-621) (POF3-621)

Experiment(s):

1. SNS-NSE: Neutron Spin Echo Spectrometer

Appears in the scientific report 2015

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Database coverage:
; ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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