Potential curves and orientational distributions of magnetic moments of chainlike clusters composed of secondary particles
Potential curves and orientational distributions of magnetic moments of chainlike clusters composed of secondary particles
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二次粒子链状团簇的势曲线和磁矩取向分布
DOI：
10.1016/0304-8853(95)00588-9
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
G. N. Coverdale
中科院分区：
文献类型：
--
作者：
A. Satoh;R. Chantrell;S. Kamiyama;G. N. Coverdale
本文研究了由二次磁性粒子组成的链状团簇的势能曲线。用通常的Monte Carlo方法，还阐明了初级粒子磁矩在次级粒子中的取向分布。这里获得的结果可以总结如下。对于平行排列，其中一个集群位于另一个旁边，排斥力作用在集群之间，吸引力不会出现任何集群集群分离。另一方面，对于交错排列，其中一个集群相对于另一个移动的饱和场方向的二次粒子的半径，吸引力在短距离集群之间的作用。这些力随着团簇变长和次级粒子尺寸的增加而变得更强。尽管交错排列存在势垒，但势垒的高度几乎是恒定的，与簇的长度无关。
The present study investigates the potential curves of linear chainlike clusters which are composed of secondary magnetic particles. The orientational distributions of the magnetic moments of the primary particles within the secondary particles are also clarified by means of the usual Monte Carlo method. The results obtained here can be summarized as follows. For the parallel arrangement, in which one cluster lies just beside the other, repulsive forces act between clusters and attractive forces do not arise for any cluster-cluster separation. On the other hand, for the staggered arrangement, in which one cluster is shifted relative to the other in the saturating field direction by the radius of secondary particles, attractive forces do act between clusters at short range. These forces become stronger as the clusters become longer and as the size of secondary particles increases. Although there is a potential barrier for the staggered arrangement, the height of the barrier is almost constant, irrespective of cluster length.