Enter a species  (e.g. Al, Fe): Ar
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: Morse_QuinticSmoothed_Jelinek_1972_Ar__MO_908645784389_002
Enter hexagonal lattice constants 'a' and 'c' (m): 3.714476823330494e-10, 6.063206768075203e-10

Calculating isothermal bulk modulus

Warning: Maximum number of function evaluations has been exceeded.

Finished calculation

C11 = 6.144985022712493 GPa
C12 = 1.6217317039133559 GPa
  B = 3.1294828101797347 GPa