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Dynamics of free surfaces in model fcc, hcp and L1(2) structures

机译:fcc,hcp和L1(2)模型结构中自由表面的动力学

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摘要

Dynamic properties of free surfaces in their relaxed configuration obtained by the static relaxation method, are studied in fee Ni and Al, hcp Ti and the L1(2) alloy Ni3Al. The (001), (110) and (111) surfaces are analysed for the fee and L1(2) structures and the (0001), <(1(2)over bar 10)> and <(10(1)over bar 0)> surfaces for the hcp structure. Interatomic potentials of the embedded-atom method type are used to calculate vibrational eigenfrequencies obtained through the Einstein and 'cluster' approaches for the atoms on the first few layers.
机译:通过静态Ni和Al,hcp Ti和L1(2)合金Ni3Al研究了通过静态弛豫方法获得的处于松弛状态的自由表面的动态特性。分析(001),(110)和(111)曲面的费用和L1(2)结构以及(0001),<(1(2)over bar 10)>和<(10(1)over over bar) 0)> hcp结构的表面。嵌入原子方法类型的原子间电势用于计算通过爱因斯坦和“簇”方法获得的前几层原子的振动本征频率。

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