STABILITY AND FRAGMENTATION OF COMPLEX STRUCTURES IN FERROFLUIDS

被引：77

作者：

JUND, P ^{[1
]}

KIM, SG ^{[1
]}

TOMANEK, D ^{[1
]}

HETHERINGTON, J ^{[1
]}

机构：

[1] MICHIGAN STATE UNIV,CTR FUNDAMENTAL MAT RES,E LANSING,MI 48824

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.74.3049

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We use quaternion molecular dynamics to determine the equilibrium structure, the stability, and the dynamics of fragmentation of magnetic particle aggregates as a function of applied magnetic field and temperature. In a colloidal suspension the particles form complex one-dimensional structures. At low fields and beyond a critical size, rings are more stable than chains. Rings orient perpendicularly to an applied field and can be activated to fragment into chains. This activation barrier vanishes and rings fragment spontaneously at a higher critical field. © 1995 The American Physical Society.

引用

页码：3049 / 3052

页数：4

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