Physical properties of magnetic fluids and nanoparticles from magnetic and magneto-rheological measurements

被引：67

作者：

Vékás, L ^{[1
]}

Rasa, M ^{[1
]}

Bica, D ^{[1
]}

机构：

[1] Acad Romana, Timisoara Branch, Ctr Fundamental & Adv Tech Res, Timisoara 1900, Romania

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2000年 / 231卷 / 02期

关键词：

magnetic fluids; nanoparticles; magnetization; magnetorheology;

D O I：

10.1006/jcis.2000.7123

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：

Static magnetization curves and the magnetorheological effect were used to study the microstructural properties (agglomerate formation) of magnetic fluids and the properties of dispersed nanoparticles, Improved techniques for magnetogranulometry analysis and a formula for the magnetoviscous effect were proposed, The area of applicability of some existing models was studied. The density, distribution, and dimension of particles, as well as the thickness of the nonmagnetic layer were accurately determined from magnetic measurements. The Shliomis diameter and the effective anisotropy constant were determined from rheological and magnetorheological measurements using information obtained from magnetization curves. (C) 2000 Academic Press.

引用

页码：247 / 254

页数：8

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