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Monosized Core–Shell Fe3O4 (Fe)/Au Multifunctional Nanocrystals

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We have synthesized highly crystalline, monosized Fe3O4(Fe)/Au magnetic-optic multifunctional nanocrystals using a modified polyol process. The formation of the core–shell structure was achieved in two consecutive steps, seeding the Fe3O4(Fe) core followed by coating the gold shell. The characterization demonstrates the core–shell nanostructure and provides particle size and distribution of the nanocrystals. The spectroscopic analysis gives three Fe oxidation states (Fe0, Fe+2 and Fe+3) in the core and the surface plasmon characteristic of the Au nanoshell, while the magnetic measurements show excellent susceptibility of the nanocrystals.
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Document Type: Research Article

Publication date: February 1, 2009

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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