Sn diamond MEAM_LAMMPS_KimKoLee_2020_NaSn__MO_329881861557_000 6.581419467926026 Optimization terminated successfully. Current function value: -25.077505 Iterations: 191 Function evaluations: 496 C11 = 50.413448 +/- 0.007336 GPa C12 = 35.660281 +/- 0.005187 GPa C44 = 10.530924 +/- 0.001834 GPa B = 40.578004 +/- 0.004235 GPa