Si fcc SW_LeeHwang_2012GGA_Si__MO_040570764911_001 4.2612488120794305 Optimization terminated successfully. Current function value: -8.330930 Iterations: 70 Function evaluations: 181 C11 = 480.230812 +/- 0.007336 GPa C12 = 518.538182 +/- 0.005187 GPa C44 = 55.929866 +/- 0.001834 GPa B = 505.769059 +/- 0.004235 GPa