Repulsive and attractive ferroglasses: a SAXS and XPCS study
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Sociedade Brasileira de Física
2009
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| _version_ | 1876450011232862208 |
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| author | E. Wandersman |
| author_facet | E. Wandersman |
| contents | Repulsive and attractive ferroglasses: a SAXS and XPCS study E. Wandersman Y. Chushkin E. Dubois V. Dupuis G. Demouchy A. Robert R. Perzynski Física, Astronomía y Matemáticas 75 50 61 10 82 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. 2009 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46413556014 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.1A Vol.39 |
| format | Artículo científico |
| id | redalyc_46413556014 |
| institution | Redalyc |
| language | en |
| publishDate | 2009 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Repulsive and attractive ferroglasses: a SAXS and XPCS study E. Wandersman Física, Astronomía y Matemáticas 75 50 61 10 82 Repulsive and attractive ferroglasses: a SAXS and XPCS study E. Wandersman Y. Chushkin E. Dubois V. Dupuis G. Demouchy A. Robert R. Perzynski Física, Astronomía y Matemáticas 75 50 61 10 82 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. 2009 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46413556014 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.1A Vol.39 |
| title | Repulsive and attractive ferroglasses: a SAXS and XPCS study |
| topic | Física, Astronomía y Matemáticas 75 50 61 10 82 |
| url | https://www.redalyc.org/articulo.oa?id=46413556014 |