Fe bcc Pair_Johnson_Fe__MO_857282754307_003 2.8599998205900192 Optimization terminated successfully. Current function value: -3.074378 Iterations: 72 Function evaluations: 190 C11 = 192.260798 +/- 0.007336 GPa C12 = 96.130428 +/- 0.005187 GPa C44 = 96.274147 +/- 0.001834 GPa B = 128.173885 +/- 0.004235 GPa