Study of Phonon Dynamics of Cu60Zr20Hf10Ti10 Bulk Metallic Glass Using Pseudopotential

Authors Aditya M. Vora

Department of Physics, University School of Sciences, Gujarat University, Ahmedabad, 380009 Gujarat, India

Issue Volume 11, Year 2019, Number 6
Dates Received 25 June 2019; revised manuscript received 01 December 2019; published online 25 December 2019
Citation Aditya M. Vora, J. Nano- Electron. Phys. 11 No 6, 06032 (2019)
PACS Number(s) 63.20.Dj, 65.60. + a
Keywords Longitudinal and transverse phonon frequencies, Bulk metallic glass (BMG), Thermodynamic and elastic properties.

In the present paper, the computations of the vibrational phonon frequencies of the longitudinal and transverse branches in a quaternary Cu60Zr20Hf10Ti10 bulk metallic glass (BMG) using simple Hubbard-Beeby (HB) model approach have been presented. Ashcroft’s empty core model pseudopotential is utilized in conjunction with Hartree screening of conduction electrons with and without the inclusion of correlation effects by employing various forms of local field correction functions for the first time. The phonon frequency observations reproduce the typical features of the dispersing nature. Also, the thermodynamic and elastic properties of the said BMG are calculated through the elastic limit of the dispersion bends.

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