Si fcc Tersoff_LAMMPS_Tersoff_1989_SiGe__MO_350526375143_002 3.89748257399 Optimization terminated successfully. Current function value: -15.470863 Iterations: 73 Function evaluations: 193 C11 = 1226.657669 +/- 0.007336 GPa C12 = 1188.558691 +/- 0.005187 GPa C44 = 204.010904 +/- 0.001834 GPa B = 1201.258350 +/- 0.004235 GPa