Enter a species  (e.g. Al, Fe): Ar
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: Morse_SigmoidalSmoothed_Jelinek_1972_Ar__MO_071460865933_002
Enter hexagonal lattice constants 'a' and 'c' (m): 3.721067363891159e-10, 6.071881908305537e-10

Calculating isothermal bulk modulus

Warning: Maximum number of function evaluations has been exceeded.

Finished calculation

C11 = 0.003348125623347121 GPa
C12 = 0.0008837082259629406 GPa
  B = 0.0017051806917576674 GPa