Enter a species  (e.g. Al, Fe): Sr
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: Morse_Shifted_GirifalcoWeizer_1959HighCutoff_Sr__MO_497591319122_003
Enter hexagonal lattice constants 'a' and 'c' (m): 4.291584197395004e-10, 7.010377457415575e-10

Calculating isothermal bulk modulus

Optimization terminated successfully.
         Current function value: -3.461077
         Iterations: 74
         Function evaluations: 196

Finished calculation

C11 = 24.713730985083746 GPa
C12 = 5.936066169351766 GPa
  B = 12.195287774595759 GPa