Figure 5
Correlation between atomic mobility of copper atoms and their local structural environments in Cu45Zr45Ag10 at 800 K. The copper atoms are sorted into 20 groups in increasing order of displacement. In each group, the percentage of <0,0,12,0> polyhedra and number of coordinated silver atoms are plotted with (a) a short time interval of 1.5tα′, and (b) a long time interval of 1.5tα′, where the shear stress and temperature as the independent variables are plotted on the x and y axes, respectively. (c) Three-dimensional mean-square displacement map of all atoms based on propensity for motion under the conditions observed in (b). The isosurfaces indicate the slow- and fast-dynamics regions where Δr2 is less than 25 Å2 (blue regions) and more than 80 Å2 (green to red regions). (d) Three-dimensional map showing isosurfaces of the slow-dynamics regions and the distribution of silver atoms (pink balls). The blue slow-dynamics regions are apparently silver-poor regions. The cube has the dimensions of 53×53×53 Å3; the color bars in (c) and (d) show the range from fast (red) to slow (blue) dynamics. Adapted from Ref. 46 (© 2010 APS).
