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Título: | Capping layer effects in the structure and composition of Co nanoparticle ultrathin films |
Autor: | Arbiol, J.; Peiró, F.; Cornet, Albert CSIC; Clavero Pérez, César CSIC ORCID; Cebollada, Alfonso CSIC ORCID; Armelles Reig, Gaspar CSIC ORCID; Huttel, Yves CSIC ORCID | Palabras clave: | Cobalt magnetic particles Nanoparticles ferromagnetic materials Aluminium compounds magnesium compounds platinum magnetic thin films Metallic thin films Insulating thin films transmission electron microscopy |
Fecha de publicación: | 12-ene-2005 | Editor: | American Institute of Physics | Citación: | Applied Physic Letters 86, 032510 (2005) | Resumen: | In this work, we present the correlation of the magnetic and structural properties of Co nanoparticles deposited by sputtering on Si3N4 substrates at different temperatures, and covered with different capping layers, two insulators, AlN and MgO, and a metal, Pt. High-resolution transmission electron microscopy shows the formation of CoPt3 and Co2N, for the Pt and AlN capping layers, respectively, giving to a significant change of the magnetic behavior. When using a cap of MgO, energy-filtered transmission electron microscopy shows an oxidized shell covering the Co nanoparticles with thickness decreasing as the deposition temperature increases, explaining the changes in the magnetic response induced by the MgO capping layer. | Versión del editor: | http://link.aip.org/link/?APPLAB/86/032510/1 http://dx.doi.org/10.1063/1.1854746 |
URI: | http://hdl.handle.net/10261/19053 | DOI: | 10.1063/1.1854746 | ISSN: | 0003-6951 |
Aparece en las colecciones: | (IMN-CNM) Artículos |
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Arbiol, J. et al Appl.Phys.Lett._86_2005.pdf | 537,74 kB | Adobe PDF | Visualizar/Abrir |
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