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024 7 _ |a 10.1063/1.2717127
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041 _ _ |a eng
082 _ _ |a 530
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|a Physics, Applied
100 1 _ |a Rose, V.
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245 _ _ |a Thermal stability of Co-core-CoO-shell nanoparticles on an ultrathin theta-Al2O3 film support
260 _ _ |a Melville, NY
|b American Institute of Physics
|c 2007
300 _ _ |a 086104
336 7 _ |a Journal Article
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336 7 _ |a article
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440 _ 0 |a Journal of Applied Physics
|x 0021-8979
|0 3051
|v 101
500 _ _ |a Record converted from VDB: 12.11.2012
520 _ _ |a 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.
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