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Molecular dynamics simulation of liquid and amorphous Fe nanoparticles

机译:液态和非晶态铁纳米颗粒的分子动力学模拟

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Liquid and amorphous Fe nanoparticles have been studied in spherical models with sizes of 3, 4 and 5 nm. We use the molecular dynamics (MD) method with the Pak–Doyam interatomic pair potential. Structural properties of Fe nanoparticles have been studied via radial distribution function (RDF), interatomic distances, coordination number distribution and radial density profile. Local icosahedral order was detected via using Honeycutt–Andersen (HA) analysis compared with that observed in the bulk counterparts. Surface and core structures of Fe nanoparticles have been studied in detail. Potential and surface energies of liquid and amorphous Fe nanoparticles have been calculated and discussed in addition to the size dependence of a glass transition temperature.
机译:已在球形模型中研究了液态和无定形的铁纳米颗粒,尺寸分别为3、4和5 nm。我们使用具有Pak–Doyam原子间对势的分子动力学(MD)方法。通过径向分布函数(RDF),原子间距离,配位数分布和径向密度分布图研究了铁纳米颗粒的结构性质。通过使用Honeycutt-Andersen(HA)分析检测到了局部二十面体顺序,而在散装同行中观察到了。已经详细研究了铁纳米颗粒的表面和核心结构。除了玻璃化转变温度的大小依赖性之外,还计算和讨论了液态和非晶态Fe纳米粒子的势能和表面能。

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