%0 Journal Article
%A Rose, V.
%A Franchy, R.
%T Thermal stability of Co-core-CoO-shell nanoparticles on an ultrathin theta-Al2O3 film support
%J Journal of applied physics
%V 101
%@ 0021-8979
%C Melville, NY
%I American Institute of Physics
%M PreJuSER-59201
%P 086104
%D 2007
%Z Record converted from VDB: 12.11.2012
%X 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.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000246072200172
%R 10.1063/1.2717127
%U https://juser.fz-juelich.de/record/59201