Enter a species  (e.g. Al, Fe): Er
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: LJ_ElliottAkerson_2015_Universal__MO_959249795837_003
Enter hexagonal lattice constants 'a' and 'c' (m): 3.676291873468048e-10, 6.00347928507277e-10

Calculating isothermal bulk modulus

Warning: Maximum number of function evaluations has been exceeded.

Finished calculation

C11 = 446.0762841431212 GPa
C12 = 119.38454942971339 GPa
  B = 228.28179433418268 GPa