Na fcc MEAM_LAMMPS_KimKoLee_2020_Na__MO_321355778754_000 5.298585683107377 Optimization terminated successfully. Current function value: -4.457558 Iterations: 1064 Function evaluations: 3167 C11 = 11.613273 +/- 0.007336 GPa C12 = 6.285180 +/- 0.005187 GPa C44 = 5.021340 +/- 0.001834 GPa B = 8.061211 +/- 0.004235 GPa