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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 >Phonon dispersion in bulk metallic glass Zr55Cu30Al10Ni15
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Phonon dispersion in bulk metallic glass Zr55Cu30Al10Ni15

机译：声子在大块金属玻璃Zr55Cu30Al10Ni15中的分散

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摘要

The expressions for the phonon frequencies of Zr55CU30Al10Ni15 bulk metallic glass employing a simple model given by Bhatia and Singh for a hypothetical one-component metallic glass are derived both for longitudinal and transverse modes of excitations. The model assumes a central force, effective between the nearest neighbours, and a volume dependent force. Both types of excitations of phonons are computed for the Zr55CU30Al10Ni15 bulk metallic glass for the first time both for self-consistent screening of conduction electrons with and without the inclusion of correlation effects. Phonon frequency expressions reproduce the main characteristic features of the dispersion curves. The theoretical results predicted are in a good agreement with available experimental data of different quaternary bulk metallic glasses having same constituents. These are also compared to the theoretical results of a quaternary glass to have an insight of the structural behavior of the glass under consideration. (c) 2006 Elsevier B.V. All rights reserved.
机译：分别针对纵向和横向激发模式，推导了使用由Bhatia和Singh给出的简单模型假设的单组分金属玻璃的Zr55CU30Al10Ni15块状金属玻璃的声子频率表达式。该模型假定在最近的邻居之间有效的中心力和与体积有关的力。首次针对Zr55CU30Al10Ni15块状金属玻璃计算了两种类型的声子激发，用于自洽筛选传导电子，无论是否包含相关效应。声子频率表达式再现了色散曲线的主要特征。预测的理论结果与具有相同成分的不同四元体金属玻璃的可用实验数据高度吻合。还将这些与四元玻璃的理论结果进行比较，以洞悉所考虑的玻璃的结构行为。 （c）2006 Elsevier B.V.保留所有权利。

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