Abstract
Dynamic Monte Carlo simulations are used to study the evolution of clusters in magnetic fluids subjected to a rectangular magnetic pulse. The number of clusters and their perimeter provide quantitative estimations of the morphology of cluster structures. For large values of the dipolar interaction energy with respect to thermal energy, break up of existing clusters, followed by their elongation, predominate. For small values of the dipolar interaction energy, the process of cluster formation is enhanced in the presence of the external magnetic field.
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