Nb bcc MEAM_LAMMPS_LeeBaskesKim_2001_Nb__MO_802302521552_001 3.302443534135818 Optimization terminated successfully. Current function value: -14.940000 Iterations: 77 Function evaluations: 202 C11 = 252.724229 +/- 0.007336 GPa C12 = 133.119141 +/- 0.005187 GPa C44 = 31.853717 +/- 0.001834 GPa B = 172.987503 +/- 0.004235 GPa