Structure factor of ferrofluids with chain aggregates: Influence of an external magnetic field

In this paper we present the structure factor of ferrofluid with chain aggregates under the influence of an externally applied magnetic field. On the basis of the equilibrium chains distribution the structure factor is calculated as Fourier transform of the radial distribution function. An extensive comparison of the theoretical model to the results of computer simulations showed a qualitative agreement of the data. The existence of the chains leads to strong anisotropy of the structure factor for the cases parallel and perpendicular to the external magnetic field.