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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Atomistic Simulation of Decomposition Processes in Ag—Cu Hollow Nanocubes
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Atomistic Simulation of Decomposition Processes in Ag—Cu Hollow Nanocubes

机译:Ag-Cu中空纳米立方体分解过程的原子模拟

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Molecular dynamics simulations have been employed to study the thermal behavior of an alloyed Ag—Cu hollow cube with a side about 8 nm long and walls about 2 nm thick. Gradual heating determines at about 300 K a partial decomposition with the formation of Ag- and Cu-rich crystalline domains. The interplay between highly cooperative atomic displacements and thermodynamic factors produce a remarkable self-organization which results in the formation of a hollow cube with crystalline facets mostly occupied by Ag-rich domains, i.e. by the species with the lowest surface energy. Further heating results in the collapse and the final melting of the whole structure.
机译:分子动力学模拟已用于研究合金化的Ag-Cu空心立方体的热行为,该立方体的侧面长约8 nm,壁厚约2 nm。逐渐加热确定在300 K左右发生部分分解,形成富含Ag和Cu的晶畴。高度协作的原子位移与热力学因素之间的相互作用产生了显着的自组织,这导致形成了空心晶格,该晶格中的晶面主要被富银域占据,即被表面能最低的物种占据。进一步加热导致整个结构塌陷并最终熔化。

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