Vibrational Dynamics of Pd-Ni-P Bulk Metallic Glasses

P. Suthar, P. Gajjar
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引用次数: 0

Abstract

In the present paper, Phonon modes and elastic constant of three different concentrations of PdxNi1-xP (Pd64Ni16P20, Pd40Ni40P20 and Pd16Ni64P20) bulk metallic glass are calculated using (1) Hubbard-Beeby (HB) and (2) Takeno-Goda (TG) approach along with our well established local model potential. The Hartree (H), Farid et al (F) and Sarkar et al (S) local field correlation functions (LFCF) are employed to examine the effect of the screening function on the collective dynamics of Pd-Ni-P bulk metallic glasses. Results are also reported for phonon dispersion curve, propagation elastic wave and elastic properties viz: bulk modulus BT, modulus of rigidity G, Poisson’s ratio ξ, Young’s modulus Y, Debye temperature ƟD. However, the calculated elastic constants results agree well with other theoretical and available experimental data.
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Pd-Ni-P大块金属玻璃的振动动力学
本文采用(1)hubhad - beeby (HB)和(2)Takeno-Goda (TG)方法以及我们已经建立的局部模型势,计算了三种不同浓度PdxNi1-xP (Pd64Ni16P20、Pd40Ni40P20和Pd16Ni64P20)大块金属玻璃的声子模和弹性常数。采用Hartree (H)、Farid等(F)和Sarkar等(S)局部场相关函数(LFCF)研究了筛选函数对Pd-Ni-P大块金属玻璃集体动力学的影响。结果还报道了声子色散曲线,传播弹性波和弹性特性,即:体积模量BT,刚度模量G,泊松比ξ,杨氏模量Y,德拜温度ƟD。然而,计算的弹性常数与其他理论和现有的实验数据吻合得很好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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