Influence of dextran coating on the magnetic behaviour of iron oxide nanoparticles

被引：63
作者：
Dutz, Silvio
Andrae, Wilfried
Hergt, Rudolf
Mueller, Robert
Oestreich, Christiane
Schmidt, Christopher
Toepfer, Jorg
Zeisberger, Matthias
Bellemann, Matthias E.
机构：
[1] Inst Phys High Technol, D-07745 Jena, Germany
[2] Univ Appl Sci, Dept Biomed Engn, Jena, Germany
[3] Freiberg Univ Min & Technol, Inst Ceram Mat, Freiberg, Germany
[4] Univ Appl Sci, Dept Mat Engn, Jena, Germany
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 311卷 / 01期
关键词：
Henkel plot; hysteresis; magnetic loss; magnetite; specific heating power;
D O I：
10.1016/j.jmmm.2006.11.168
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetic iron oxide nanoparticles with mean diameters in the range from 10 to 30 nm were prepared by modified chemical precipitation routes. The particles were suspended in an aqueous solution by coating of the particles with carboxymethyldextran. A stability against agglomeration was achieved over a period of more than 7 days. In the present investigation, the structural and the magnetic properties of the nanoparticles were investigated. The influence of the dextran shell on the strength of the dipole-dipole interactions between the neighbouring particles was determined by investigation of the remanence behaviour (Henkel plot) of coated as well as of uncoated particles. (C) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：51 / 54
页数：4
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