Repulsive and attractive ferroglasses: a SAXS and XPCS study

Detalhes bibliográficos
Autor(a) principal: Wandersman,E.
Data de Publicação: 2009
Outros Autores: Chushkin,Y., Dubois,E., Dupuis,V., Demouchy,G., Robert,A., Perzynski,R.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Physics
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332009000200014
Resumo: A dynamical freezing, which is the analogous of a glass transition, is observed at large concentrations in aqueous dispersions of maghemite nanoparticles. We study experimentally the structure and the dynamical properties of two dense ferroglass-formers in two very distinct states of interparticle interaction, either strongly repulsive or attractive. The static structure of the magnetic colloidal dispersions is probed by means of Small Angle X-ray Scattering both in and without the presence of an external magnetic field. Translational dynamics of the repulsive glassformer are investigated by X ray Photon Correlation Spectroscopy. Slow dynamics and aging properties, which both become anisotropic under an applied field, are here investigated.
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spelling Repulsive and attractive ferroglasses: a SAXS and XPCS study75.50.Mn Magnetic liquids61.10.i Xray diffraction and scattering82.70.Dd Colloids64.70.Pf Glass transitionsA dynamical freezing, which is the analogous of a glass transition, is observed at large concentrations in aqueous dispersions of maghemite nanoparticles. We study experimentally the structure and the dynamical properties of two dense ferroglass-formers in two very distinct states of interparticle interaction, either strongly repulsive or attractive. The static structure of the magnetic colloidal dispersions is probed by means of Small Angle X-ray Scattering both in and without the presence of an external magnetic field. Translational dynamics of the repulsive glassformer are investigated by X ray Photon Correlation Spectroscopy. Slow dynamics and aging properties, which both become anisotropic under an applied field, are here investigated.Sociedade Brasileira de Física2009-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332009000200014Brazilian Journal of Physics v.39 n.1a 2009reponame:Brazilian Journal of Physicsinstname:Sociedade Brasileira de Física (SBF)instacron:SBF10.1590/S0103-97332009000200014info:eu-repo/semantics/openAccessWandersman,E.Chushkin,Y.Dubois,E.Dupuis,V.Demouchy,G.Robert,A.Perzynski,R.eng2009-07-03T00:00:00Zoai:scielo:S0103-97332009000200014Revistahttp://www.sbfisica.org.br/v1/home/index.php/pt/ONGhttps://old.scielo.br/oai/scielo-oai.phpsbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br1678-44480103-9733opendoar:2009-07-03T00:00Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)false
dc.title.none.fl_str_mv Repulsive and attractive ferroglasses: a SAXS and XPCS study
title Repulsive and attractive ferroglasses: a SAXS and XPCS study
spellingShingle Repulsive and attractive ferroglasses: a SAXS and XPCS study
Wandersman,E.
75.50.Mn Magnetic liquids
61.10.i Xray diffraction and scattering
82.70.Dd Colloids
64.70.Pf Glass transitions
title_short Repulsive and attractive ferroglasses: a SAXS and XPCS study
title_full Repulsive and attractive ferroglasses: a SAXS and XPCS study
title_fullStr Repulsive and attractive ferroglasses: a SAXS and XPCS study
title_full_unstemmed Repulsive and attractive ferroglasses: a SAXS and XPCS study
title_sort Repulsive and attractive ferroglasses: a SAXS and XPCS study
author Wandersman,E.
author_facet Wandersman,E.
Chushkin,Y.
Dubois,E.
Dupuis,V.
Demouchy,G.
Robert,A.
Perzynski,R.
author_role author
author2 Chushkin,Y.
Dubois,E.
Dupuis,V.
Demouchy,G.
Robert,A.
Perzynski,R.
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Wandersman,E.
Chushkin,Y.
Dubois,E.
Dupuis,V.
Demouchy,G.
Robert,A.
Perzynski,R.
dc.subject.por.fl_str_mv 75.50.Mn Magnetic liquids
61.10.i Xray diffraction and scattering
82.70.Dd Colloids
64.70.Pf Glass transitions
topic 75.50.Mn Magnetic liquids
61.10.i Xray diffraction and scattering
82.70.Dd Colloids
64.70.Pf Glass transitions
description A dynamical freezing, which is the analogous of a glass transition, is observed at large concentrations in aqueous dispersions of maghemite nanoparticles. We study experimentally the structure and the dynamical properties of two dense ferroglass-formers in two very distinct states of interparticle interaction, either strongly repulsive or attractive. The static structure of the magnetic colloidal dispersions is probed by means of Small Angle X-ray Scattering both in and without the presence of an external magnetic field. Translational dynamics of the repulsive glassformer are investigated by X ray Photon Correlation Spectroscopy. Slow dynamics and aging properties, which both become anisotropic under an applied field, are here investigated.
publishDate 2009
dc.date.none.fl_str_mv 2009-04-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332009000200014
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332009000200014
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-97332009000200014
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Física
publisher.none.fl_str_mv Sociedade Brasileira de Física
dc.source.none.fl_str_mv Brazilian Journal of Physics v.39 n.1a 2009
reponame:Brazilian Journal of Physics
instname:Sociedade Brasileira de Física (SBF)
instacron:SBF
instname_str Sociedade Brasileira de Física (SBF)
instacron_str SBF
institution SBF
reponame_str Brazilian Journal of Physics
collection Brazilian Journal of Physics
repository.name.fl_str_mv Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)
repository.mail.fl_str_mv sbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br
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