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Magnetic-Plasmonic Core-Shell Nanoparticles
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DOI：10.1021/nn900118a.png)
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摘要
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Nanoparticles composed of magnetic cores with continuous Au shell layers simultaneously possess both magnetic and plasmonic properties. Faceted and tetracubic nanocrystals consisting of wustite with magnetite-rich corners and edges retain magnetic properties when coated with a Au shell layer, with the composite nanostructures showing ferrimagnetic behavior. The plasmonic properties are profoundly influenced by the high dielectric constant of the mixed iron oxide nanocrystalline core. A comprehensive theoretical analysis that examines the geometric plasmon tunability over a range of core permittivities enables us to identify the dielectric properties of the mixed oxide magnetic core directly from the plasmonic behavior of the core-shell nanoparticle.
Keyword:
wustite nanocrystals
core-shell nanostructure
surface plasmon resonance
bifunctional
magnetic nanoshells
期刊
IF:
16
论文数:
2.7W
被引数:
25.6W
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