Enter a species  (e.g. Al, Fe): Ni
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: Morse_Shifted_GirifalcoWeizer_1959LowCutoff_Ni__MO_322509103239_003
Enter hexagonal lattice constants 'a' and 'c' (m): 2.515024114510937e-10, 4.090470662567487e-10

Calculating isothermal bulk modulus

Optimization terminated successfully.
         Current function value: -7.872920
         Iterations: 73
         Function evaluations: 193

Finished calculation

C11 = 367.8271392189085 GPa
C12 = 91.54770875125116 GPa
  B = 183.64085224047028 GPa