Journal Article

PreJuSER-59201

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Thermal stability of Co-core-CoO-shell nanoparticles on an ultrathin theta-Al2O3 film support

Rose, V. ; Franchy, R.FZJ*

2007
American Institute of Physics Melville, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/17134  doi:10.1063/1.2717127

Abstract: The effect of annealing temperature on a system of Co-core-CoO-shell nanoparticles on theta-Al2O3/CoAl(100) has been investigated using a combination of Auger electron spectroscopy, high-resolution electron energy loss spectroscopy, low-energy electron diffraction, and scanning tunneling microscopy. Results show that thermal treatment leads to a decomposition of the CoO-shell above 450 K, and thus it is strongly diminished with respect to the bulk value. Between 550 and 1050 K the Co particles coalescence and diffuse through the oxide into the substrate. Due to defect recovery, the thermal stability of the thin aluminum oxide film remained unchanged compared to as-grown theta-Al2O3. (c) 2007 American Institute of Physics.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Research Program(s):

1. Grundlagen für zukünftige Informationstechnologien (P42)

Appears in the scientific report 2007

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