Si bcc SW_BalamaneHaliciogluTiller_1992_Si__MO_113686039439_004 3.2448074221611023 Optimization terminated successfully. Current function value: -8.659889 Iterations: 71 Function evaluations: 184 C11 = 954.198117 +/- 0.007336 GPa C12 = 716.514703 +/- 0.005187 GPa C44 = 75.124021 +/- 0.001834 GPa B = 795.742507 +/- 0.004235 GPa