Microwave synthesis and characterization of Co-ferrite nanoparticles

被引：161

作者：

Bensebaa, F

Zavaliche, F

L'Ecuyer, P

Cochrane, RW

Veres, T

机构：

[1] Natl Res Council Canada, Inst Chem Proc & Environm Technol, Ottawa, ON K1A 0R6, Canada

[2] Natl Res Council Canada, Inst Ind Mat, Boucherville, PQ J4B 6Y4, Canada

[3] Univ Montreal, Dept Phys, Montreal, PQ H3C 3J7, Canada

[4] Univ Montreal, Regrp Quebecois Mat Pointe, Montreal, PQ H3C 3J7, Canada

[5] Natl Inst Mat Phys, RO-76900 Bucharest, Romania

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2004年 / 277卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

magnetism; CoF(2)O(4); nanoparticles; microwave synthesis;

D O I：

10.1016/j.jcis.2004.04.016

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Stable CoFe(2)O(4) nanoparticles have been obtained by co-precipitation using a microwave heating system. Transmission electron microscopy images analysis shows an agglomeration of particles with an average size of about 5 nm, and X-ray diffraction reveals the presence of a pure ferrite nanocrystalline phase. X-ray photoelectron spectroscopy and thermal gravimetric analysis show the presence of organic matter in the range of about 16 wt%. The magnetic response in DC fields is typical for an assembly of single-domain particles. The measured saturation magnetization is slightly larger than the bulk value, probably due to the presence of small amounts of Co and Fe. AC magnetization data indicate the presence of magnetic interactions between the nanoparticles. Crown Copyright (C) 2004 Published by Elsevier Inc. All rights reserved.

引用

页码：104 / 110

页数：7

共 46 条

[1] Characterisation of the spinels M(x)Co(1-x)Fe(2)O(4) (M=Mn,Fe or Ni) using X-ray photoelectron spectroscopy [J].