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Park, Jongnam
Materials and Chemistry Lab (MCL)
Research Interests
  • Inorganic synthesis, microfluidics, nanomaterials, surface engineering, bioimaging

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Inter-particle and interfacial interaction of magnetic nanoparticles

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Title
Inter-particle and interfacial interaction of magnetic nanoparticles
Author
Bae, Che JinHwang, YosunPark, JongnamAn, KwangjinLee, YoujinLee, JinwooHyeon, TaeghwanPark, JG
Issue Date
2007-03
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, v.310, no.2, pp.E806 - E808
Abstract
In order to understand inter-particle as well as interfacial interaction of magnetic nanoparticles, we have prepared several Fe3O4 nanoparticles in the ranges from 3 to 50 nm. These nanoparticles are particularly well characterized in terms of size distribution with a standard deviation (σ) in size less than 0.4 nm. We investigated the inter-particle interaction by measuring the magnetic properties of the nanoparticles while controlling inter-particle distances by diluting the samples with solvents. According to this study, blocking temperatures dropped by 8-17 K with increasing the inter-particle distances from a few nm to 140 nm while the overall shape and qualitative behavior of the magnetization remain unchanged. It implies that most features observed in the magnetic properties of the nanoparticles are due to the intrinsic properties of the nanoparticles, not due to the inter-particle interaction. We then examined possible interfacial magnetic interaction in the core-shell structure of our Fe3O4 nanoparticles. © 2006 Elsevier B.V. All rights reserved.
URI
https://scholarworks.unist.ac.kr/handle/201301/12910
URL
http://www.sciencedirect.com/science/article/pii/S0304885306019779
DOI
10.1016/j.jmmm.2006.10.746
ISSN
0304-8853
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ECHE_Journal Papers
BME_Journal Papers
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