A model, free of any adjustable parameter, has been developed for the size-
dependent melting temperature and melting entropy of nanocrystals. The mode
l can be utilized to predict the thermal stability both for metallic and or
ganic low dimensional materials. The results show that their melting thermo
dynamic functions are dependent on their size, dimension, and environment.
The theoretical predictions in terms of the above model are fully consisten
t with experimental evidences and the results of molecular dynamics simulat
ion. (C) 2000 Elsevier Science S.A. All rights reserved.