Experimental studies of strong dipolar interparticle interaction in monodisperse Fe3O4 nanoparticles

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Interparticle interaction of monodisperse Fe3O4 nanoparticles has been experimentally investigated by dispersing the nanoparticles in solvents. With increasing the interparticle distances to larger than 100 nm in a controlled manner, the authors found that the blocking temperature (T-B) of the nanoparticles drops continuously and eventually gets saturated with a total drop in T-B of 7-17 K observed for 3, 5, and 7 nm samples, compared with their respective nanopowder samples. By carefully studying the dependence of T-B on the interparticle distance, the authors could demonstrate that the experimental dependence of T-B follows the theoretical curve of the dipole-dipole interaction. (C) 2007 American Institute of Physics.
Publisher
AMER INST PHYSICS
Issue Date
2007-09
Language
English
Article Type
Article
Keywords

MAGNETIC NANOPARTICLES

Citation

APPLIED PHYSICS LETTERS, v.91, no.10

ISSN
0003-6951
DOI
10.1063/1.2778758
URI
http://hdl.handle.net/10203/245130
Appears in Collection
CBE-Journal Papers(저널논문)
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