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Gold-coated iron nanoparticles in transparent Si3N4 matrix thin films

AuthorsSánchez-Marcos, J. ; Céspedes, Eva ; Jiménez-Villacorta, Félix ; Muñoz-Martín, A. ; Prieto, C.
KeywordsCore–shell nanoparticles
Magnetic nanoparticles
Issue DateMay-2013
CitationJournal of Nanoparticle Research 15: 1714 (2013)
AbstractA new method to prepare thin films containing gold-coated iron nanoparticles is presented. The ternary Fe–Au–Si3N4 system prepared by sequential sputtering has revealed a progressive variation of microstructures from Au/Fe/Au/Si3N4 multilayers to iron nanoparticles. Microstructural characterization by transmission electron microscopy, analysis of the magnetic properties and probing of the iron short-range order by X-ray absorption spectroscopy confirm the existence of a gold-coated iron nanoparticles of 1–2 nm typical size for a specific range of iron and gold contents per layer in the transparent silicon nitride ceramic matrix.
Publisher version (URL)http://dx.doi.org/10.1007/s11051-013-1714-2
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