Si fcc SW_ZhangXieHu_2014OptimizedSW1_Si__MO_800412945727_004 3.886954709887505 Optimization terminated successfully. Current function value: -13.331917 Iterations: 70 Function evaluations: 185 C11 = 665.683215 +/- 0.007336 GPa C12 = 693.902909 +/- 0.005187 GPa C44 = 89.015770 +/- 0.001834 GPa B = 684.496344 +/- 0.004235 GPa