Published in:
physica status solidi (b), 247 (2010) 5, Seite 1032-1038
Language:
English
DOI:
10.1002/pssb.200945569
ISSN:
1521-3951;
0370-1972
Origination:
Footnote:
Description:
AbstractIn situ scanning tunneling measurements have been carried out on mass‐filtered supported Fe, Co, and FeCo alloy nanoparticles with diameters between 4 and 14 nm. These nanoparticles are prepared from the gas phase using a continuously working cluster source and are subsequently deposited on bare W(110) and Ni(111)/W(110) surfaces. The size and the crystallographic structure before deposition are determined by high resolution transmission electron microscopy (HRTEM), the height of the nanoparticles on the substrate by scanning tunneling microscopy (STM). Depending on the substrate the particles do not maintain their spherical shape after deposition. The melting at elevated temperatures results in an anisotropic elongation along the [001] direction of the W(110) substrate.STM illustration of large Co nanoparticles deposited on an atomically flat W(110)‐surface.magnified image