Pb bcc Morse_Shifted_GirifalcoWeizer_1959MedCutoff_Pb__MO_958424213898_004 3.9261581301689152 Optimization terminated successfully. Current function value: -3.983890 Iterations: 108 Function evaluations: 291 C11 = 43.425583 +/- 0.007336 GPa C12 = 42.243903 +/- 0.005187 GPa C44 = 42.343774 +/- 0.001834 GPa B = 42.637797 +/- 0.004235 GPa