Enter a species  (e.g. Al, Fe): Ar
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): 2.061839055685644e-10, 3.367036290123732e-10

Calculating isothermal bulk modulus

Optimization terminated successfully.
         Current function value: -0.205727
         Iterations: 71
         Function evaluations: 188

Finished calculation

C11 = 42.28018456846808 GPa
C12 = 11.315554911038765 GPa
  B = 21.63709813018187 GPa