particles. The investigation of the potential curves of linear Three-dimensional Monte Carlo simulations have been carried chainlike clusters has shown that large attractive forces arise out in order to investigate the thick chainlike cluster formation of between the chainlike clusters (5). The previous paper sucferromagnetic fine particles in an applied magnetic field. The receeded in simulating thick chainlike clusters by means of the sults of the aggregate structures are summarized as follows. If a cluster-moving Monte Carlo method for a two-dimensional magnetic field is sufficiently strong and magnetic particle-particle model system (6).
interactions are relatively strong, thick chainlike clusters are
The present study discusses the thick chainlike cluster formed along a field direction. The thick chainlike clusters obformation for a three-dimensional system. Specifically, we tained by the simulations agree well with those observed experiattempt to clarify the dependence of the cluster formation mentally. For the increased particle-particle interactions, high potential barriers arise between thin chainlike clusters, so that it on the interactions between particles and on the magnetic is impossible for the thin chainlike clusters to aggregate to form field strength. Furthermore, the internal structures themthick chainlike clusters. In small magnetic fields, thick chainlike selves are discussed by means of pair correlation functions. clusters are not observed, since nonlinear clusters are preferred to linear clusters in this situation, whereby strong attractive forces 2. MONTE CARLO SIMULATIONS do not act between clusters, due to flux closure.