Figure 7. Histogram of the 6 eigenvalues C_i of the Kelvin stiffness tensor C_ij evaluated using Born's force constants for a tiling of the total volume into 57³ boxes (V_c = 44, red dashes) and into 16³ boxes (V_c = 2000, blue lines).

The total volume is V = 8.3 · 10⁶. Insert: Mean values 〈C_i〉 (top group) and disorder parameters (bottom group) vs. coarse-graining volume V_c. The top and bottom black lines correspond to , the others to .