Enter a species  (e.g. Al, Fe): Sb
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): 2.703727303894343e-10, 4.415256265233717e-10

Calculating isothermal bulk modulus

Optimization terminated successfully.
         Current function value: -51.432680
         Iterations: 75
         Function evaluations: 192

Finished calculation

C11 = 4687.704333454775 GPa
C12 = 1254.5824860413213 GPa
  B = 2398.956435179139 GPa