Abstract
Based on the effective coordination number (ECN) viewpoint a model for the sizedependency of cohesive energy of nanocrystals has been developed. In order to calculateECN both un-relaxed and relaxed surfaces have been considered. It has been shown thatbond order–length–strength (BOLS) correlation mechanism can be described successfullyby adopting an average ECN approach. Based on ECN and the fundamental effect ofcohesive energy on physical quantities, the size dependency of the following parameters hasbeen established: melting temperature, evaporation temperature, Debye temperature,vacancy formation energy of nanocrystals and surface tension of nanodroplets. Predictionsfor the size dependency of the aforementioned properties are in good agreementwith the BOLS model and available results from experimental and simulationstudies.
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