A study of the geometric characteristics of copper nanoclusters incorp
orated in an amorphous hydrogenated carbon matrix is reported. It make
s use of small-angle x-ray scattering and transmission electron micros
copy (100 keV), The fractal dimension and nanocluster diameter have be
en determined from the x-ray scattering indicatrix for different coppe
r concentrations. TEM images of copper nanoclusters have been analyzed
, and a cluster distribution function in size constructed. The shape o
f the distribution function is discussed in terms of the theory of nuc
leation of a new phase. (C) 1998 American Institute of Physics. [S1063
-7834(98)03803-9].