Enter a species  (e.g. Al, Fe): Np
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: LJ_ElliottAkerson_2015_Universal__MO_959249795837_003
Enter hexagonal lattice constants 'a' and 'c' (m): 3.695745337050053e-10, 6.035247185532654e-10

Calculating isothermal bulk modulus

Optimization terminated successfully.
         Current function value: -48.583600
         Iterations: 71
         Function evaluations: 182

Finished calculation

C11 = 1733.7768815441289 GPa
C12 = 464.0152323722266 GPa
  B = 887.2691154295273 GPa