摘要
由在一个散开模型在聚集的圆柱的结构的表面上把 Arrhenius 行为介绍给 ferroparticles，平衡方程被建立。方程的答案显示那使聚集的结构稳定，一个典型领域被需要。聚集被磁场提高，当温度增加，还压制了。在在偶极的粒子之间的相互作用精力上分析磁场的影响，我们估计扩散粒子的部分，并且在在一个垂直磁场下面形成的六角形的圆柱的结构在在列之间的 centre-to-centre 间距上提供列半径的令人喜悦的的比率。[从作者抽象]
By introducing Arrhenius behaviour to the ferroparticles on the surface of the aggregated columnar structure in a diffusion model, equilibrium equations are set up. The solution of the equations shows that to keep the aggregated structures stable, a characteristic field is needed. The aggregation is enhanced by magnetic fields, yet suppressed as the temperature increases. Analysing the influence of the magnetic field on the interaction energy between the dipolar particles, we estimate the portion of the diffusing particles, and provide the agreeable ratio of the column radius over the centre-to-centre spacing between columns in a hexagonal columnar structure formed under a perpendicular magnetic field.
基金
Supported by the National Natural Science Foundation of China under Grant No 60471023, and the Natural Science Foundation of Guangdong Province under Grant No 06300338.
关键词
铁磁流体薄膜
扩散模型
磁场
阿列纽斯行为
the power-law exponents, precipitation, durative, abrupt precipitation change
