Enter a species  (e.g. Al, Fe): Zn
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: Tersoff_LAMMPS_ErhartJuslinGoy_2006_ZnO__MO_616776018688_002
Enter hexagonal lattice constants 'a' and 'c' (m): 2.700186163329738e-10, 4.398343191085117e-10

Calculating isothermal bulk modulus

Optimization terminated successfully.
         Current function value: -2.659748
         Iterations: 74
         Function evaluations: 194

Finished calculation

C11 = 446.3578303950631 GPa
C12 = 190.89515582423465 GPa
  B = 276.04938068117747 GPa