Fe fcc Sim_LAMMPS_ReaxFF_AryanpourVanDuinKubicki_2010_FeHO__SM_222964216001_001 3.627988576889038 Optimization terminated successfully. Current function value: -17.360084 Iterations: 78 Function evaluations: 208 C11 = 64.928753 +/- 0.007336 GPa C12 = 115.221077 +/- 0.005187 GPa C44 = 115.221425 +/- 0.001834 GPa B = 98.456969 +/- 0.004235 GPa