2007/05/11 by Amitava Moitra, Sungho Kim, J. Houze +9
Chemistry · Earth and Planetary Sciences · Materials Science · Physics and Astronomy · #Advanced Chemical Physics Studies #Atom (system on chip) #Chemical physics #Chemistry #Composite material #Computational chemistry #Embedded atom model #Interatomic potential #Material Dynamics and Properties #Materials science #Melting point #Melting temperature #Melting-point depression #Metallurgy #Molecular dynamics #Nanoparticle #Nanotechnology #Physics #Premelting #RADIUS #Thermodynamics #Tungsten #cond-mat.mtrl-sci #nanoparticles nucleation surface interactions
paper · pdf · doi:10.1088/0022-3727/41/18/185406
7 pages, 4 figures
arxiv created 2007/05/11 · openalex publication_date 2008/08/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We report a molecular dynamics simulation of melting of tungsten (W) nanoparticles. The modified embedded atom method (MEAM) interatomic potentials are used to describe the interaction between tungsten atoms. The melting temperature of unsupported tungsten nanoparticles of different sizes are found to decrease as the size of the particles decreases. The melting temperature obtained in the present study is approximately a decreasing function of inverse radius, in a good agreement with the predictions of thermodynamic models. We also observed that the melting of a W nanoparticle is preceded by the premelting of its outer skin at a temperature lower than its melting temperature.