Enter a species (e.g. Al, Fe): Ne Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: Exp6_KongChakrabarty_1973_ArNe__MO_946046425752_002 Enter hexagonal lattice constants 'a' and 'c' (m): 2.973299048329112e-10, 4.855475517119798e-10 Calculating isothermal bulk modulus Warning: Maximum number of function evaluations has been exceeded. Finished calculation C11 = 4.593117418711835 GPa C12 = 1.2419431287387794 GPa B = 2.3590012253964643 GPa