Dynamics and correlations in magnetic colloidal systems studied by X-ray photon correlation spectroscopy
| Autor: | J. Lal, Gerhard Grübel, L. Auvray, D. L. Abernathy, Olivier Diat |
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| Rok vydání: | 2001 |
| Předmět: |
Physics
Ferrofluid business.industry Scattering Small-angle X-ray scattering Anisotropic diffusion Colloidal silica Biophysics Surfaces and Interfaces General Chemistry Molecular physics Magnetic field Condensed Matter::Soft Condensed Matter Optics Dynamic light scattering General Materials Science Diffusion (business) business Biotechnology |
| Zdroj: | The European Physical Journal E. 4:263-271 |
| ISSN: | 1292-8941 |
| Popis: | We have studied the static and dynamic behaviour of magnetic colloidal systems (ferrofluids) by Small-Angle X-ray Scattering (SAXS) and X-ray Photon Correlation Spectroscopy (XPCS). The main features of the novel XPCS technique will be illustrated by data taken on a model system, colloidal silica spheres. We will then present the results obtained on an optically opaque suspension of magnetic colloids (maghemite) in the wave vector range from 10-3 to 10-2A^-1. Translational diffusion in zero field and anisotropic diffusion under external magnetic fields will be discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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