Modified embedded-atom method calculation for the Ni–W system

2003 ◽  
Vol 18 (8) ◽  
pp. 1863-1867 ◽  
Author(s):  
Jae-Hyeok Shim ◽  
Sung Il Park ◽  
Young Whan Cho ◽  
Byeong-Joo Lee

A semi-empirical interatomic potential of the Ni–W system was developed using a modified embedded-atom method (MEAM) formalism including second-nearest-neighbor interactions. The cross potential was determined by fitting physical properties of tetragonal Ni4W available in the literature. The MEAM potential was used to predict phase stabilities, lattice constants, and bulk moduli of nonequilibrium and equilibrium phases in the Ni–W system. The results were in good agreement with experimental information or first-principles calculation.

Metals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 900 ◽  
Author(s):  
Won-Seok Ko ◽  
Dong-Hyun Kim ◽  
Yong-Jai Kwon ◽  
Min Lee

A new interatomic potential for the pure tin (Sn) system is developed on the basis of the second-nearest-neighbor modified embedded-atom-method formalism. The potential parameters were optimized based on the force-matching method utilizing the density functional theory (DFT) database of energies and forces of atomic configurations under various conditions. The developed potential significantly improves the reproducibility of many fundamental physical properties compared to previously reported modified embedded-atom method (MEAM) potentials, especially properties of the β phase that is stable at the ambient condition. Subsequent free energy calculations based on the quasiharmonic approximation and molecular-dynamics simulations verify that the developed potential can be successfully applied to study the allotropic phase transformation between α and β phases and diffusion phenomena of pure tin.


2006 ◽  
Vol 21 (1) ◽  
pp. 199-208 ◽  
Author(s):  
Jaesong Kim ◽  
Yangmo Koo ◽  
Byeong-Joo Lee

A semi-empirical interatomic potential formalism, the modified embedded atom method (MEAM), has been applied to obtain an interatomic potential for the Fe–Pt alloy system, based on the previously developed potentials for pure Fe and Pt. The potential can describe basic physical properties of the alloys (lattice parameter, bulk modulus, stability of individual phases, and order/disorder transformations), in good agreement with experimental information. The procedure for the determination of potential parameter values and comparisons between the present calculation and experimental data or high level calculation are presented. The applicability of the potential to atomistic studies to investigate structural evolution of Fe50Pt50 alloy thin films during post-annealing is also discussed.


2021 ◽  
Vol 9 ◽  
Author(s):  
Shoubing Ding ◽  
Yue Li ◽  
Yiying Luo ◽  
Zhimin Wu ◽  
Xinqiang Wang

The second nearest-neighbor modified embedded-atom method (2NN MEAM) potential parameters of the Ti–Cr binary and Ti–Cr–N ternary systems are optimized in accordance with the 2NN MEAM method. The novel constructed potential parameters can well reproduce the multiple fundamental physical characteristics of binary and ternary systems and reasonably agree with the first-principles calculation or experimental data. Thus, the newly constructed 2NN MEAM potential parameters can be used for atomic simulations to determine the underlying principle of the hardness enhancement of TiN/CrN multilayered coatings.


2014 ◽  
Vol 16 (13) ◽  
pp. 6233-6249 ◽  
Author(s):  
S. Nouranian ◽  
M. A. Tschopp ◽  
S. R. Gwaltney ◽  
M. I. Baskes ◽  
M. F. Horstemeyer

Extension of the computationally efficient modified embedded-atom method to hydrocarbons and polymers.


2005 ◽  
Vol 71 (18) ◽  
Author(s):  
Byeong-Joo Lee ◽  
Brian D. Wirth ◽  
Jae-Hyeok Shim ◽  
Junhyun Kwon ◽  
Sang Chul Kwon ◽  
...  

2010 ◽  
Vol 493 (1-3) ◽  
pp. 57-60 ◽  
Author(s):  
Gregory Grochola ◽  
Salvy P. Russo ◽  
Ian K. Snook

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