The structure formation and dynamics of a dilute, monodisperse ferrofluid emulsion under the influence of an external magnetic field have been investigated using static and dynamic light scattering techniques. In the absence of an external field, the spherical emulsion particles behave as a dilute system of hard spheres where the static light scattering is dominated by the droplet form factor and the dynamic light scattering provides the diffusion coefficient due to their Brownian motion. An applied magnetic field induces a magnetic dipole moment in each droplet. Static light scattering is used to study the time dependence of the structure formation caused by the dipole-dipole interaction as a function of the field strength. The change of the dynamic properties due to chain formation is studied by dynamic light scattering.
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Hagenbüchle et al. (1996) studied this question.
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