Fe bcc Pair_Johnson_Fe__MO_857282754307_003 2.85999982059 Optimization terminated successfully. Current function value: -3.074378 Iterations: 75 Function evaluations: 199 C11 = 192.260800 +/- 0.007336 GPa C12 = 96.130429 +/- 0.005187 GPa C44 = 96.274148 +/- 0.001834 GPa B = 128.173886 +/- 0.004235 GPa