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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Concentration dependence of partial vibrational spectra in Ni-Nb and Cu-Zr metallic glasses
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Concentration dependence of partial vibrational spectra in Ni-Nb and Cu-Zr metallic glasses

机译：Ni-Nb和Cu-Zr金属玻璃中部分振动光谱的浓度依赖性

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摘要

The neutron inelastic scattering of the Ni_(44)Nb_(56) and Cu_(33)Zr_(67) metallic glasses with isotope substitution for Cu and Ni were measured. The results are compared to earlier data for Ni_(62)Nb_(38) and Cu_(64)Zr_(36) (Ni and Cu isotopic substitution). Availability of two samples with different isotope content for each system has enabled partial vibrational densities of states to be obtained for both materials. The ratios of average force constants, B_(Ni)/B_(Nb) and B_(Cu)/B_(Zr), and mean-square atomic displacements, , for Ni, Nb, Cu and Zr atoms are estimated. The interatomic interaction of the Ni and Cu atoms the differences to all enighbours is less than that of the Nb and Zr atoms. With decrease of the content of Ni and Cu atoms the differences of the average force constants in each system decline.
机译：测量了同位素取代Cu和Ni的Ni_（44）Nb_（56）和Cu_（33）Zr_（67）金属玻璃的中子非弹性散射。将结果与Ni_（62）Nb_（38）和Cu_（64）Zr_（36）（Ni和Cu同位素取代）的早期数据进行比较。每个系统具有不同同位素含量的两个样品的可用性使两种材料都可以获得部分振动态。 Ni，Nb，Cu和Zr原子的平均力常数B_（Ni）/ B_（Nb）和B_（Cu）/ B_（Zr）的比率与均方原子位移为估计。 Ni和Cu原子之间原子间相互作用的差异小于Nb和Zr原子之间的差异。随着Ni和Cu原子含量的减少，每个体系中平均力常数的差异减小。

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