Abstract
Small angle neutron scattering experiments were performed on a eicosane-based ferrofluid. An average size of 88 Å can be extracted from the data, in agreement with results from electron microscopy. Below the frozen temperature of eicosane, however, the particles are seen to be in larger aggregates with a fractal dimension of 2.15, similar to those formed under reaction-limited cluster aggregation (RLCA) conditions. At high concentrations, particles form larger aggregates even in the liquid state. Applying a magnetic field introduces new structure and changes the density inside the aggregates.
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Lin, M.Y., Luo, W. & Lynn, J. Neutron Scattering from a Ferrofluid. MRS Online Proceedings Library 376, 341–344 (1994). https://doi.org/10.1557/PROC-376-341
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DOI: https://doi.org/10.1557/PROC-376-341