Nb fcc MEAM_LAMMPS_LeeBaskesKim_2001_Nb__MO_802302521552_001 4.1687071621418 Optimization terminated successfully. Current function value: -29.176785 Iterations: 1064 Function evaluations: 3167 C11 = 184.069094 +/- 0.007336 GPa C12 = 154.848509 +/- 0.005187 GPa C44 = 17.747172 +/- 0.001834 GPa B = 164.588704 +/- 0.004235 GPa