Elastic Properties of Zr50Cu43Ag7 Bulk Metallic Glass Using Pseudopotential Theory

Chaudhari Prakruti; Payal N. Chauhan; R.H. Joshi; Nisarg K. Bhatt; Brijmohan Y. Thakore

doi:10.4028/www.scientific.net/AMR.1141.232

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Elastic Properties of Zr₅₀Cu₄₃Ag₇ Bulk Metallic Glass Using Pseudopotential Theory
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1141Elastic Properties of Zr50Cu43Ag7 Bulk Metallic...

Elastic Properties of Zr₅₀Cu₄₃Ag₇ Bulk Metallic Glass Using Pseudopotential Theory

Abstract:

Using Hubbard-Beeby approach for phonon dynamics, in conjunction with our recently proposed model pseudopotential; phonon frequencies for longitudinal and transverse modes are computed and associated elastic properties of technologically important Zr-based Zr₅₀Cu₄₃Ag₇bulk metallic glass (BMG) are evaluated. Five different forms of the static local field correction functions, viz., Hartree et al. (H), Taylor et al. (T), Ichimaru and Utsumi et al. (IU), Farid et al. (F) and Sarkar et al. (S) are employed to investigate the influence of the screening effect on the vibrational dynamics of Zr₅₀Cu₄₃Ag₇ BMG. Results for bulk modulus, modulus of rigidity, Poisson's ratio, Young modulus, propagation velocity of elastic waves and dispersion curves are studied. The theoretical computations are found to be in good agreement with the available experimental results, which confirms the use of our model pseudopotential to study elastic properties of such a glassy system.