Enter a species  (e.g. Al, Fe): Fr
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): 5.057324845902721e-10, 8.258741524868903e-10

Calculating isothermal bulk modulus

Optimization terminated successfully.
         Current function value: -6.244938
         Iterations: 74
         Function evaluations: 194

Finished calculation

C11 = 86.97115064106559 GPa
C12 = 23.27631618893002 GPa
  B = 44.50792767297521 GPa