Magnetic spinel ferrite nanoparticles from microemulsions

被引：90

作者：

Vestal, Christy R. ^{[1
]}

Zhang, Z. John ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA

来源：

INTERNATIONAL JOURNAL OF NANOTECHNOLOGY | 2004年 / 1卷 / 1-2期

关键词：

magnetic; nanoparticles; spinel; microemulsion;

D O I：

10.1504/IJNT.2004.003727

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Microemulsion methods have been used to prepare a wide range of spinel ferrite nanoparticles with low size distribution. Synthesis conditions are summarized for both normal micelle (o/w) and reverse micelle (w/o) synthesis procedures with examples over a variety of ferrite nanoparticles (MFe2O4; M = Co, Fe, Mg, Mn, Cr, Zn). Size selection through Control over metal cation concentration and reaction temperature using normal micelle methods as well as through adjusting the water pool diameter in reverse micelle methods is discussed. The ferrite nanoparticles display superparamagnetic properties and the size-dependent magnetization results are consistent with Stoner-Wohlfarth theory for single domain particles. SQUID magnetometry and Mossbauer spectroscopy results are presented.

引用

页码：240 / 263

页数：24