Enter a species  (e.g. Al, Fe): Ar
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: Exp6_KongChakrabarty_1973_ArNe__MO_946046425752_002
Enter hexagonal lattice constants 'a' and 'c' (m): 3.701825820904856e-10, 6.039414796297272e-10

Calculating isothermal bulk modulus

Optimization terminated successfully.
         Current function value: -0.170972
         Iterations: 71
         Function evaluations: 189

Finished calculation

C11 = 6.770125124170312 GPa
C12 = 1.8368919677366178 GPa
  B = 3.4813030198811825 GPa