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Issue 8, 2003
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Chemical synthesis of magnetic nanoparticles

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Abstract

Recent advances in the synthesis of various magnetic nanoparticles using colloidal chemical approaches are reviewed. Typically, these approaches involve either rapid injection of reagents into hot surfactant solution followed by aging at high temperature, or the mixing of reagents at a low temperature and slow heating under controlled conditions. Spherical cobalt nanoparticles with various crystal structures have been synthesized by thermally decomposing dicobalt octacarbonyl or by reducing cobalt salts. Nanoparticles of Fe–Pt and other related iron or cobalt containing alloys have been made by simultaneously reacting their constituent precursors. Many different ferrite nanoparticles have been synthesized by the thermal decomposition of organometallic precursors followed by oxidation or by low-temperature reactions inside reverse micelles. Rod-shaped iron nanoparticles have been synthesized from the oriented growth of spherical nanoparticles, and cobalt nanodisks were synthesized from the thermal decomposition of dicobalt octacarbonyl in the presence of a mixture of two surfactants.

Graphical abstract: Chemical synthesis of magnetic nanoparticles

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Article information


Submitted
09 Sep 2002
Accepted
12 Nov 2002
First published
03 Dec 2002

Chem. Commun., 2003, 927-934
Article type
Feature Article

Chemical synthesis of magnetic nanoparticles

T. Hyeon, Chem. Commun., 2003, 927
DOI: 10.1039/B207789B

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