Abstract
The collective modes of Zr41Ti14Cu12.5Be22.5Fe10 bulk metallic glass (BMG) have been theoretically studied using pseudopotential formalism. Shaw’s optimized model potential is used to describe effective interactions. Five different forms of the local field correction functions, viz. Hartree (H), Taylor (T), Ichimaru-Utsumi (IU), Farid et al. (F) and Sarkar et al. (S) have been exploited with modified Bhatia-Singh (BS) computational approach to examine the relative influence of exchange and correlation effects and to reproduce longitudinal and transverse modes of phonon eigenfrequencies using phonon dispersion curves (PDCs). Important thermodynamic and elastic properties are calculated by long-wavelength limits of phonon modes. The comparisons of such properties with earlier reported data are shown good agreement.
Published Version
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