Agglomeration in colloidal hematite dispersions due to weak magnetic interactions: II. The effects of particle size and shape☆
Agglomeration in colloidal hematite dispersions due to weak magnetic interactions: II. The effects of particle size and shape☆
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DOI：
10.1016/0021-9797(88)90114-2
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发表时间：
1988-11
影响因子：
9.9
通讯作者：
M. Ozaki;Tamami Egami;N. Sugiyama;E. Matijević
中科院分区：
文献类型：
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作者：
M. Ozaki;Tamami Egami;N. Sugiyama;E. Matijević
描述了由地磁和叠加磁场引起的均匀立方体和纺锤型赤铁矿颗粒的定向聚集（链状形成）。结果表明，颗粒尺寸和形状对这些现象的影响最为敏感。离子强度的重要性随着分散物质尺寸的减小而增加。理论计算考虑了粒子的磁矩和静电斥力，定性地预测了观察到的效应。
Directional aggregation (chain-like formation) of uniform cubic and spindle-type hematite particles caused by geomagnetic and superimposed magnetic fields is described. It was shown that the phenomena are affected in a most sensitive way by the particle size and shape. The importance of the ionic strength increases with the decreasing size of the dispersed matter. Theoretical calculations, that take into consideration the magnetic moment of the particle and the electrostatic repulsion, qualitatively predict the observed effects.