Si fcc SW_BalamaneHaliciogluTiller_1992_Si__MO_113686039439_005 4.146581947803498 Optimization terminated successfully. Current function value: -16.827612 Iterations: 70 Function evaluations: 181 C11 = 738.819898 +/- 0.007336 GPa C12 = 780.249373 +/- 0.005187 GPa C44 = 93.358335 +/- 0.001834 GPa B = 766.439548 +/- 0.004235 GPa