ISSN:
1432-0630
Keywords:
PACS: 82.80.Pv; 61.46.+w; 66.30.-h
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract. Morphological changes of Pd nanoparticles on the (100) surface of MgO single crystal were investigated by Auger electron spectroscopy in the temperature range of 873–983 K. The size and distribution of clusters were also examined by means of atomic force microscopy. It was shown that there was practically no decrease of the effective thickness of deposited Pd during heat treatments under 6×10-9 mbar. Assuming that the observed change in the Auger intensities is due to the surface Ostwald ripening the temperature dependence of the surface mass transport diffusion coefficients can be given as D′ s=(1.6+8.2 -1.34)×10-8exp((-(136±15) kJ mol-1)/(RT))m2 s-1 .
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s003390050019
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