Fe fcc Sim_LAMMPS_TersoffZBL_ByggmastarGranberg_2020_Fe__SM_958863895234_000 3.6122690513730054 Optimization terminated successfully. Current function value: -17.043604 Iterations: 74 Function evaluations: 194 C11 = 204.710656 +/- 0.007336 GPa C12 = 144.607078 +/- 0.005187 GPa C44 = 96.861303 +/- 0.001834 GPa B = 164.641604 +/- 0.004235 GPa