Birefringence and transmission electron microscopy of maghemite-based biocompatible magnetic fluids

被引：13

作者：

Elói, MTA

Azevedo, RB

Lima, ECD

Pimenta, ACM

Morais, PC

机构：

[1] Univ Brasilia, Inst Fis Nucleo Fis Aplicada, BR-70919970 Brasilia, DF, Brazil

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

[3] Univ Fed Goias, Inst Quim, BR-74001970 Goiania, Go, Brazil

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 289卷

关键词：

biocompatible magnetic fluids; maghemite; magnetic birefringence; zero-field birefringence; ZERO-FIELD BIREFRINGENCE; PARTICLES; TEMPERATURE; SIZE;

D O I：

10.1016/j.jmmm.2004.11.049

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Static magnetic birefringence (SMB) and transmission electron microscopy were used to investigate maghemite-based magnetic fluids surface coated with citrate and dispersed in physiologic solution. The model used to investigate the birefringence signal considers the monomer and dimer contributions and dimer magnetic permeability dependence to the applied field. The particle size distribution obtained from the fit of the SMB data is compared to the data obtained from the microscopy. Zero-field birefringence, present in the birefringence data, was also taken into account, and analyzed by the dimer model. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：168 / 170

页数：3