強磁性コロイド分散系中における太い鎖状クラスタ形成に関するモンテカルロ・シミュレーション

概要

論文の詳細を見る
The present study theoretically investigates the aggregate structures of thick chainlike clusters arising in ferromagnetic colloidal dispersions by means of the cluster-moving Monte Carlo method. Pair correlation functions are also evaluated to clarify the internal structures themselves of such clusters. The following aggregation image of thick chainlike clusters has been obtained from the Monte Carlo simulations for a two-dimensional model system. Particles aggregate to form chainlike clusters when magnetic attractions between particles become strong over a certain value. Such thin chainlike clusters prefer linear formation along a magnetic field direction if the strength of magnetic field is much greater than magnetic attractions between particles. In this situation, attractive forces come to act between these nearly linear chainlike clusters, and these forces increase with length of the clusters. Such attractions between the clusters lead to the formation of thick chainlike clusters.
社団法人日本機械学会の論文
1995-03-25