Abstract
The vibrational dynamics of quaternary Cu60Zr20Hf10Ti10 bulk metallic glass (BMG) in terms of the longitudinal and transverse phonon Eigen frequencies of the localized collective excitations using Show’s optimized model pseudopotential at room temperature is reported in the present study. The theoretical pseudo alloy atom (PAA) model with WH-approach is used for the computation of the interatomic pair potential V(r) and pair correlation function (PCF) g(r). The phonon dispersion curves (PDCs) are theoretically generated through Hubbard-Beeby (HB), Takeno-Ghoda (TG) and Bhatia-Singh (BS) models, where the screening dependency is studied by Hartree (H), Taylor (T), Ichimaru-Utsumi (IU), Farid et al. (F) and Sarkar et al. (S) local field correction functions. Important elastic and thermodynamic properties have been reported from the elastic limits of the phonon dispersion curves.
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ACKNOWLEDGMENTS
The computer facility established under DST-FIST programme from DST, Government of India, New Delhi, India and financial assistance under DRS-SAP-I & II from UGC, New Delhi, India are acknowledged by the author (AMV).
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Aditya M. Vora, Alkesh L. Gandhi Study of Collective Excitations in Cu60Zr20Hf10Ti10 Quaternary Bulk Metallic Glass. Glass Phys Chem 47, 431–440 (2021). https://doi.org/10.1134/S1087659621050163
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DOI: https://doi.org/10.1134/S1087659621050163