Enter a species (e.g. Al, Fe): No 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): 3.423418522952511e-10, 5.590530575661292e-10 Calculating isothermal bulk modulus Warning: Maximum number of function evaluations has been exceeded. Finished calculation C11 = 87.75442447804159 GPa C12 = 23.485944249691887 GPa B = 44.90877099247511 GPa