Enter a species  (e.g. Al, Fe): Bk
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): 3.267812579766151e-10, 5.336422051261293e-10

Calculating isothermal bulk modulus

Warning: Maximum number of function evaluations has been exceeded.

Finished calculation

C11 = 1083.2488476793876 GPa
C12 = 289.91269996942736 GPa
  B = 554.358082539414 GPa