Birefringence of magnetite-based magnetic fluids: The effect of the surface-coating layer

被引：9

作者：

Morais, PC ^{[1
]}

Neto, KS

Bakuzis, AF

Da Silva, MF

Buske, N

机构：

[1] Univ Brasilia, Inst fis Nucl Fis Aplicada, BR-79091997 Brasilia, DF, Brazil

[2] Berlin Heart AG, D-12247 Berlin, Germany

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2002年 / 38卷 / 05期

关键词：

birefringence; magnetic fluids; magnetite; permeability;

D O I：

10.1109/TMAG.2002.802497

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, water-based and hydrocarbon-based magnetic fluids (M-Fs) containing Fe3O4 nanoparticles are investigated using static magnetic birefringence measurements. A strong dependence of the birefringence signal upon the magnetic permeability is found. In addition to the field dependence of the magnetic permeability, inclusion of dimers in the description of the birefringence signal yields excellent agreement between parameters obtained from birefringence and high-resolution microscopy data.

引用

页码：3228 / 3230

页数：3

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