Chain formation in a magnetic fluid under the influence of strong external magnetic fields studied by small angle neutron scattering

We studied the aggregation of magnetic particles into chain-like structures in a cobalt-based magnetic fluid, exposed to external magnetic fields. The length of chain segments in very strong magnetic fields of up to 2 Tesla was measured in situ using small angle neutron scattering. Arrangement of the magnetic particles was studied with the scattering vector aligned parallel to the magnetic field lines, and at angles of 30° and 60° with respect …