Citation
S. Illy et al., First direct evidence of size-dependent structural transition in nanosizednickel particles, PHIL MAG A, 79(5), 1999, pp. 1021-1031
Citations number
37
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS ANDMECHANICAL PROPERTIES
ISSN journal
13642804
→ ACNP
Volume
79
Issue
5
Year of publication
1999
Pages
1021 - 1031
Database
ISI
SICI code
1364-2804(199905)79:5<1021:FDEOSS>2.0.ZU;2-S
Abstract
Finely dispersed Ni powders were obtained after chemical reduction of Ni(II
) sails by activated sodium hydride in organic solvents. This process allow
s one to prepare particles in the nanometre range. The particles with sizes
smaller than 4 nm were found to be hcp whereas larger particles were fee.
To the best of our knowledge, this is the first observation that unsupporte
d Ni powder may crystallize in the hcp system and that the phase stability
of this metallic element is particle size dependent.