Si bcc Tersoff_LAMMPS_Tersoff_1989_SiGe__MO_350526375143_002 3.08443807065 Optimization terminated successfully. Current function value: -8.393780 Iterations: 74 Function evaluations: 195 C11 = 199.060343 +/- 0.007336 GPa C12 = 134.587884 +/- 0.005187 GPa C44 = 142.337596 +/- 0.001834 GPa B = 156.078703 +/- 0.004235 GPa