Journal
EUROPEAN PHYSICAL JOURNAL E
Volume 4, Issue 3, Pages 263-271Publisher
SPRINGER-VERLAG
DOI: 10.1007/s101890170108
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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(-2) A(-1). Translational diffusion in zero field and anisotropic diffusion under external magnetic fields will be discussed.
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