ISSN:
0142-2421
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Physics
Notes:
The lattice parameters of chromium clusters deposited on carbon substrates were determined by extended energy-loss fine structure (EXELFS) measurements in transmission mode beyond the L2, 3 edges of chromium using an electron microscope. Fourier analysis of the data shows a sizeable lattice parameter contraction when the mean diameter of the clusters decreases. This contraction amounts to ∼5.2% with respect to the bulk value for those clusters with a mean volumetric diameter of ∼13 Å. The behaviour of the nearest-neighbour-distance contraction versus cluster diameter agreed with a macroscopic liquid-drop model.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/sia.740160106
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