| Revue: | Brazilian journal of physics |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000403110 |
| ISSN: | 0103-9733 |
| Autores: | Wandersman, E1 Chushkin, Y2 Dubois, E1 Dupuis, V1 Demouchy, G1 Robert, A3 Perzynski, R1 |
| Instituciones: | 1Universite Pierre et Marie Curie, Laboratoire des Liquides Ioniques et Interfaces Chargees, París. Francia 2European Synchrotron Radiation Facility, Grenoble, Isere. Francia 3Stanford University, Stanford Linear Accelerator Center, Menlo Park, California. Estados Unidos de América |
| Año: | 2009 |
| Periodo: | Abr |
| Volumen: | 39 |
| Número: | 1A |
| Paginación: | 210-216 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico |
| Resumen en inglés | 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 |
| Disciplinas: | Física y astronomía, Química |
| Palabras clave: | Física de materia condensada, Fisicoquímica y química teórica, Nanopartículas, Ferrofluidos |
| Keyword: | Physics and astronomy, Chemistry, Condensed matter physics, Physical and theoretical chemistry, Nanoparticles, Ferrofluids, Glass transition |
| Texte intégral: | Texto completo (Ver PDF) |
