By Topic

Cohesive energy and surface energy of fcc metallic nanocrystals

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
D. Liu ; Key Laboratory of Automobile Materials, Ministry of Education, and Department of Materials Science and Engineering, Jilin University, Rennin Street 5988, Changchun 130022, China ; Q. Jiang

The model for the surface energy of fcc metallic nanoparticles is developed based on the model for size-dependent cohesive energy and surface bond deficit consideration for the nanoparticles. Firstly, through the study the surface/volume ratio and surface CN(coordinate number) of the Wulff structure, the cohesive energy of interior atoms is determined. It is found that as same as the cohesive energy for the whole particles, the cohesive energy of interior atoms also decrease with the decreasing size. Considering the weakness of the cohesive energy and the increase of the surface bonds defect, size dependent surface energy of fec metallic nanoparticles is determined. It is found that the surface energy have reduction firstly and turn back to increase when the size approach to critical size of particles. The reduction of surface energy is mainly due to the decrease of cohesive energy. The following increase of surface energy is due to the decrease of surface CN. Our prediction for the surface energy is agreed with the simulation results for metallic nanoparticles.

Published in:

2008 2nd IEEE International Nanoelectronics Conference

Date of Conference:

24-27 March 2008