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Synthesis of monosized magnetic-optical AuFe alloy nanoparticles

Authors
Liu, Hong LingWu, Jun HuaMin, Ji HyunKim, Young Keun
Issue Date
1-Apr-2008
Publisher
AMER INST PHYSICS
Citation
JOURNAL OF APPLIED PHYSICS, v.103, no.7
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF APPLIED PHYSICS
Volume
103
Number
7
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/123758
DOI
10.1063/1.2837619
ISSN
0021-8979
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 similar to 560 nm. The AuFe nanoparticles are rendered water soluble after thiolation. (C) 2008 American Institute of Physics.
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