Enter a species  (e.g. Al, Fe): Rn
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): 2.917693697198935e-10, 4.764668940548093e-10

Calculating isothermal bulk modulus

Optimization terminated successfully.
         Current function value: -0.358051
         Iterations: 70
         Function evaluations: 182

Finished calculation

C11 = 25.967816844076694 GPa
C12 = 6.949834003105683 GPa
  B = 13.289161616762685 GPa