Enter a species (e.g. Al, Fe): Nd 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): 3.909700780150046e-10, 6.38464205724553e-10 Calculating isothermal bulk modulus Optimization terminated successfully. Current function value: -13.649832 Iterations: 73 Function evaluations: 190 Finished calculation C11 = 411.43978098299357 GPa C12 = 110.114693010057 GPa B = 210.55638900103583 GPa