Embedded atom method interatomic potentials fitted upon density functional theory calculations for the simulation of binary Pt Ni nanoparticles
Embedded atom method interatomic potentials fitted upon density functional theory calculations for the simulation of binary Pt Ni nanoparticles
复制标题
嵌入原子法原子间势适合密度泛函理论计算,用于模拟二元 Pt Ni 纳米粒子
DOI:
10.1016/j.commatsci.2017.03.020
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发表时间:
2017
影响因子:
3.3
通讯作者:
Symianakis E
中科院分区:
文献类型:
--
作者:
Symianakis E
Embedded Atom Method (EAM) potentials have been fitted for the atomistic simulation of small, ∼2–5 nm, binary, Ptsingle bondNi, nanoparticles completely from Density Functional Theory (DFT) total energy calculations. The overall quality of the DFT calculations and the final potential is obtained through the independent calculation of an array of properties of the pure metals and the stable alloys, which are normally used for the fitting of interatomic potentials. The ability of the fitted potentials to simulate nanostructures is evaluated by the reproduction of binary nanoslabs with thickness ∼1 nm, and nanoparticles in the extreme case of the smallest icosahedrons possible, with diameter ∼0.6 nm. The used approach requires high quality of convergence but otherwise low cost DFT as it is based on static total energy calculations. It also provides objective criteria for the evaluation of the fitted potentials during fitting and has been implemented with the open source code GULP.
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