Fig. 4 | Nature Communications

Fig. 4

From: Supercluster-coupled crystal growth in metallic glass forming liquids

Fig. 4

MD simulations of isothermal crystallization of binary Lennard–Jones glasses. a Two snapshots of a Lennard–Jones binary glass sample during an isothermal simulation at T = 0.1 at two times t1 (top) and t2 (bottom). t1 and t2 are defined in b. The snapshots only show crystalline atoms for clarity. The full configuration (crystalline and amorphous atoms) are in Supplementary Fig. 3. The pink and green colors represent the A and B atom types, respectively. b Location of the left boundary, L, between the crystalline region and the remaining glass region as a function of time t for simulations in (c). The boundary location is normalized by the size of the large atom (σA). The boundary location increases with time, indicating crystal growth. Occasionally, the boundary location exhibits large fluctuations and sudden jumps, such as the one at t1. The large peak at t1 is due to a cluster that is connected to the crystalline section in the middle. c (Left) Standard deviation of the growth rate normalized by the mean growth rate, \(\sigma _{\mathrm {v}}/\bar \upsilon\), and (right) the mean growth rate, \(\bar \upsilon ,\) as a function of the cooling rate, R, used to generate the glasses. Sixteen independent simulation samples were run to obtain the standard deviation and mean of the growth rate. Glasses prepared at slower cooling rates exhibit larger standard deviations in the growth rate and higher average growth rates