Nb bcc Sim_LAMMPS_ADP_SmirnovaStarikov_2017_ZrNb__SM_937902197407_000 3.284958705306054 Optimization terminated successfully. Current function value: -14.993414 Iterations: 70 Function evaluations: 182 C11 = 249.099486 +/- 0.007336 GPa C12 = 116.616538 +/- 0.005187 GPa C44 = 51.365940 +/- 0.001834 GPa B = 160.777521 +/- 0.004235 GPa