Synthesis of superparamagnetic MgFe2O4 nanoparticles by coprecipitation

Authors
Chen, Q Rondinone, AJ Chakoumakos, BC Zhang, ZJ
Citation
Q. Chen et al., Synthesis of superparamagnetic MgFe2O4 nanoparticles by coprecipitation, J MAGN MAGN, 194(1-3), 1999, pp. 1-7
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN journal
03048853 → ACNP
Volume
194
Issue
1-3
Year of publication
1999
Pages
1 - 7
Database
ISI
SICI code
0304-8853(199904)194:1-3<1:SOSMNB>2.0.ZU;2-B
Abstract
MgFe2O4 nanoparticles have been synthesized by coprecipitation method. Magn etic measurements in combination with neutron diffraction have determined t he existence of a superparamagnetic state in this metal oxide system. The s uperparamagnetic relaxation of magnetization in these nanoparticles has bee n studied by using Mossbauer spectroscopy. The relaxation time has been cor related with the particle size and temperature and is consistent with Neel theory. (C) 1999 Elsevier Science B.V. All rights reserved.