Ar bcc Morse_SigmoidalSmoothed_Jelinek_1972_Ar__MO_071460865933_001 4.19256526232 Optimization terminated successfully. Current function value: -0.000110 Iterations: 72 Function evaluations: 185 C11 = 0.001504 +/- 0.007336 GPa C12 = 0.001691 +/- 0.005187 GPa C44 = 0.001693 +/- 0.001834 GPa B = 0.001629 +/- 0.004235 GPa