Dynamical Variable of Bi₅₀Zn₅₀ Bulk Metallic Glass at Various Temperature

Abstract:

The theoretical study of dynamical variables: velocity autocorrelation function (VACF), power spectrum (PS) and mean square displacement (MSD) of Bi₅₀Zn₅₀ bulk metallic glass at T= 793K, 873K, 1023K and 1123K have been calculated based on the static harmonic well approximation. The effective interatomic potential for bulk metallic glass is computed using our established model potential with the exchange correlation functions due to Farid et al. It is observed that negative dip in velocity auto correlation function decreases as the temperature increases. In the power spectrum as temperature increases, the peak of power spectrum shifts toward lower ω. The obtained result of MSD concludes that the vibrating component in the atomic motion is decreases as increases the temperatures.

• Periodical: Advanced Materials Research (Volume 1141)
• Pages: 166-170
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1141.166
• Online since: August 2016
• Authors: P.H. Suthar*
• Keywords: Bulk Metallic Glass, Pseudopotential, Velocity Auto Correlation Functions (VACF)

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