Zero-field birefringence of biocompatible magnetic fluids:: A concentration dependence investigation

被引：10

作者：

Elói, MTA

Azevedo, RB

Lima, ECD

Pimenta, CM

Morais, PC ^{[1
]}

机构：

[1] Univ Brasilia, Inst Fis, BR-7919970 Brasilia, DF, Brazil

[2] Univ Brasilia, Inst Ciencias Biol, Dept Genet & Morfol, BR-70910900 Brasilia, DF, Brazil

[3] Univ Fed Goias, Inst Quim, BR-74001 Goiania, Go, Brazil

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 293卷 / 01期

关键词：

biocompatibility; biocompatible magnetic fluids; maghemite; zero-field birefringence; citrate; sample dilution effect; magnetite; nanoparticles;

D O I：

10.1016/j.jmmm.2005.02.015

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Zero-field birefringence was used to investigate maghemite-based biocompatible magnetic fluids surface-coated with citrate. The model used to analyze the birefringence signal considers the dipolar magnetic interaction among dimers and the onset of a nematic phase near the sample holder surface. The data show that zero-field birefringence grows with sample dilution. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：220 / 223

页数：4

共 14 条

[11] Surface-induced ordering in ionic and surfacted magnetic fluids [J].