Enter a species  (e.g. Al, Fe): Na
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): 3.228905622038133e-10, 5.272886029203109e-10

Calculating isothermal bulk modulus

Warning: Maximum number of function evaluations has been exceeded.

Finished calculation

C11 = 656.5734680606546 GPa
C12 = 175.72045319865583 GPa
  B = 336.00479148598873 GPa