Enter a species  (e.g. Al, Fe): La
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): 4.026410733900658e-10, 6.575232338241547e-10

Calculating isothermal bulk modulus

Optimization terminated successfully.
         Current function value: -41.628891
         Iterations: 73
         Function evaluations: 187

Finished calculation

C11 = 1148.815428684237 GPa
C12 = 307.46046090738014 GPa
  B = 587.9121168329991 GPa