Na sc MEAM_LAMMPS_KimKoLee_2020_NaSn__MO_329881861557_000 3.345068663358688 Optimization terminated successfully. Current function value: -0.909705 Iterations: 76 Function evaluations: 200 C11 = 201.938189 +/- 0.007336 GPa C12 = 88.458696 +/- 0.005187 GPa C44 = 73.400045 +/- 0.001834 GPa B = 126.285194 +/- 0.004235 GPa