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An, Kwangjin
Advanced Nanocatalysis Lab (An Lab)
Research Interests
  • Nanoparticle catalytsts, catalytic activity, selectivity, and stability, strong metal-support interactions, CO2 utilization, biomass conversion, Plastic Up-cycling

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Experimental studies of strong dipolar interparticle interaction in monodisperse Fe3O4 nanoparticles

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Title
Experimental studies of strong dipolar interparticle interaction in monodisperse Fe3O4 nanoparticles
Author
Bae, Che JinAngappane, SPark, JGLee, YoujinLee, JinwooAn, KwangjinHyeon, Taeghwan
Keywords
Dispersions; Iron compounds; Saturation (materials composition); Solvents; Thermal effects
Issue Date
2007-09
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.91, no., pp.102502-1 - 102502-3
Abstract
Interparticle interaction of monodisperse Fe3 O4 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 (TB) of the nanoparticles drops continuously and eventually gets saturated with a total drop in TB of 7-17 K observed for 3, 5, and 7 nm samples, compared with their respective nanopowder samples. By carefully studying the dependence of TB on the interparticle distance, the authors could demonstrate that the experimental dependence of TB follows the theoretical curve of the dipole-dipole interaction. © 2007 American Institute of Physics.
URI
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DOI
10.1063/1.2778758
ISSN
0003-6951
Appears in Collections:
ECHE_Journal Papers
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APL 2007,91,102502-1, Experimental studies of strong dipolar interparticle interaction in monodisperse Fe3O4 NPs.pdf Download

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