Enter a species  (e.g. Al, Fe): Si
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): 2.159095513736953e-10, 3.525858553090487e-10

Calculating isothermal bulk modulus

Optimization terminated successfully.
         Current function value: -52.865428
         Iterations: 71
         Function evaluations: 184

Finished calculation

C11 = 9461.62985931873 GPa
C12 = 2532.240502868972 GPa
  B = 4842.036955018891 GPa