Size-dependent melting temperature of nanoparticles based on cohesive energy

作者：Huo, Kai-Tuo; Chen, Xiao-Ming^*

来源：Modern Physics Letters B, 2014, 28(19): 1450157.

DOI：10.1142/S0217984914501577

• Melting temperature
• cohesive energy
• nanoparticles

Size-dependent melting temperature of metallic nanoparticles is studied theoretically based on cohesive energy. Three factors are introduced in the present model. The k factor, i.e. efficiency of space filling of crystal lattice is defined as the ratio between the volume of the atoms in a crystal cell and that of the crystal cell. The beta factor is defined as the ratio between the cohesive energy of surface atom and interior atom of a crystal. The q(s) factor represents the packing fraction on a surface crystalline plane. Considering the beta, q(s) and k factors, the relationship between melting temperature and nanoparticle size is discussed. The obtained model is compared with the reported experimental data and the other models.

• 出版日期2014-7-30
• 单位陕西师范大学