Estimation of magnetic particle clustering in magnetic fluids from static magnetization experiments

被引：24
|
作者：
Socoliuc, V
Bica, D
Vekas, L
机构：
[1] Natl Inst R&D Electrochem & Condensed Matter, Timisoara 1900, Romania
[2] Politech Univ Timisoara, Inst Complex Fluids, Timisoara 1900, Romania
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2003年 / 264卷 / 01期
关键词：
magnetic liquids; nanoscale materials and structures; magnetic properties of nanostructures;
D O I：
10.1016/S0021-9797(03)00426-0
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The volume fraction dependence of the static magnetization of two magnetic fluids with different degrees of steric stabilization was measured at low field values (0-10 kA/m) and it was found to be nonlinear for both magnetic fluids. The nonlinearity is more pronounced in the case of the less stabilized magnetic fluid. The experimental data were processed by nonlinear regression using an analytical model for the formation of chain-like magnetic particle aggregates in magnetic fluids. The calculated dependence on the degree of steric stabilization, magnetic field, and sample concentration of the mean number of particles per chain was in the range (1-1.04). (C) 2003 Elsevier Inc. All rights reserved.
引用
收藏
页码：141 / 147
页数：7
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