Nb bcc LJ_ElliottAkerson_2015_Universal__MO_959249795837_003 3.610254213213921 Optimization terminated successfully. Current function value: -84.028269 Iterations: 71 Function evaluations: 187 C11 = 2029.505548 +/- 0.007336 GPa C12 = 2477.924640 +/- 0.005187 GPa C44 = 2480.656913 +/- 0.001834 GPa B = 2328.451610 +/- 0.004235 GPa