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Fabrication and Properties of Self-Assembled Nanosized Magnetic Particles

Published online by Cambridge University Press:  17 March 2011

G. Salazar-Alvarez ,
M. Mikhailova ,
M. Toprak ,
Y. Zhang  and
M. Muhammed
G. Salazar-Alvarez
Affiliation:
Materials Chemistry Division, Royal Institute of Technology. SE-100 44 Stockholm, Sweden
M. Mikhailova
Affiliation:
Materials Chemistry Division, Royal Institute of Technology. SE-100 44 Stockholm, Sweden
M. Toprak
Affiliation:
Materials Chemistry Division, Royal Institute of Technology. SE-100 44 Stockholm, Sweden
Y. Zhang
Affiliation:
Materials Chemistry Division, Royal Institute of Technology. SE-100 44 Stockholm, Sweden
M. Muhammed
Affiliation:
Materials Chemistry Division, Royal Institute of Technology. SE-100 44 Stockholm, Sweden
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Abstract

The synthesis and characterisation of gold-coated cobalt nanoparticles, as well as their chemically- and magnetically-induced self-organisation have been studied. Metallic core-shell nanoparticles were prepared using two different experimental techniques: bulk reductive precipitation, with average particles size ∼15 nm, and microemulsion confining method, with average particle size of ∼6 nm. The self-assembly of prepared nanoparticles on flat substrates was achieved by derivatising the substrate and particle surfaces with bifunctional organic molecules that attaches to both particles and substrates.

Examination of the self-assembled systems was carried out by a number of characterisation techniques including transmission electron microscopy (TEM), UV-visible spectrophotometry (UV-VIS), and atomic force microscopy (AFM).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 704: Symposium W – Nanoparticulate Materials , 2001 , W7.1.1
Copyright
Copyright © Materials Research Society 2002

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