Enter a species  (e.g. Al, Fe): W
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: Morse_Shifted_GirifalcoWeizer_1959HighCutoff_W__MO_646516726498_003
Enter hexagonal lattice constants 'a' and 'c' (m): 2.80689417125263e-10, 4.583036053901172e-10

Calculating isothermal bulk modulus

Optimization terminated successfully.
         Current function value: -17.831879
         Iterations: 72
         Function evaluations: 188

Finished calculation

C11 = 677.1817915865648 GPa
C12 = 168.60185161963574 GPa
  B = 338.12849827527873 GPa