Enter a species (e.g. Al, Fe): Ac 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): 4.182016697119758e-10, 6.829340906988656e-10 Calculating isothermal bulk modulus Warning: Maximum number of function evaluations has been exceeded. Finished calculation C11 = 922.7620127924179 GPa C12 = 246.9611929901868 GPa B = 472.2281329242638 GPa