Enter a species  (e.g. Al, Fe): Ra
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): 4.29872663207299e-10, 7.019931214778522e-10

Calculating isothermal bulk modulus

Optimization terminated successfully.
         Current function value: -28.478604
         Iterations: 74
         Function evaluations: 187

Finished calculation

C11 = 645.8160439772818 GPa
C12 = 172.84142513677637 GPa
  B = 330.4996314169448 GPa