Gold-coated iron nanoparticles in transparent Si3N4 matrix thin films

被引:0
|
作者
J. Sánchez-Marcos
E. Céspedes
F. Jiménez-Villacorta
A. Muñoz-Martín
C. Prieto
机构
[1] Consejo Superior de Investigaciones Científicas,Instituto de Ciencia de Materiales de Madrid
[2] Universidad Autónoma de Madrid,Dept. Química
[3] European Synchrotron Radiation Facilities,Física Aplicada
[4] ESRF,SpLine Spanish CRG Beamline
[5] Universidad Autónoma de Madrid,Centro de Microanálisis de Materiales
[6] Keele University,Institute for Science and Technology in Medicine, Guy Hilton Research Centre
[7] Northeastern University,Department of Chemical Engineering
来源
Journal of Nanoparticle Research | 2013年 / 15卷
关键词
Core–shell nanoparticles; Magnetic nanoparticles; Magnetic nanoparticles in transparent films;
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学科分类号
摘要
A 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.
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