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Synthesis of monosized magnetic-optical AuFe alloy nanoparticles

Authors :
Ji Hyun Min
Jun Hua Wu
Young Keun Kim
Hong Ling Liu
Source :
Journal of Applied Physics. 103:07D529
Publication Year :
2008
Publisher :
AIP Publishing, 2008.

Abstract

We report the preparation and characterization of multifunctional AuFe alloy nanoparticles of three compositions, Au0.25Fe0.75, Au0.5Fe0.5, and Au0.75Fe0.25, by a polyol process. It is found that the fusion of the two elements into one nanostructure entity retains the optical and magnetic properties of the individual components. The x-ray diffraction and transmission electron microscopy analyses confirm the formation of the alloy nanostructure with a narrow distribution of particle sizes and provides the detailed structural arrangements. The magnetic investigation shows the superparamagnetic or soft ferromagnetic behavior of the nanoparticles at room temperature, whereas the UV-visible measurements display the variation of the absorption bands at ∼560nm. The AuFe nanoparticles are rendered water soluble after thiolation.

Details

ISSN :
10897550 and 00218979
Volume :
103
Database :
OpenAIRE
Journal :
Journal of Applied Physics
Accession number :
edsair.doi...........1b179d5493b1954196467ccfe9a6fa88
Full Text :
https://doi.org/10.1063/1.2837619