Enter a species  (e.g. Al, Fe): Si
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: ThreeBodyCluster_SRS_StephensonRadnySmith_1996_Si__MO_604248666067_000
Enter hexagonal lattice constants 'a' and 'c' (m): 3.599863010528486e-10, 3.538185611981953e-10

Calculating isothermal bulk modulus

Warning: Maximum number of function evaluations has been exceeded.

Finished calculation

C11 = 1309.6248028068228 GPa
C12 = 259.2916958234879 GPa
  B = 609.4027314845995 GPa