Rb diamond Morse_Shifted_GirifalcoWeizer_1959LowCutoff_Rb__MO_754498969542_004 9.935573789477345 Optimization terminated successfully. Current function value: -3.958973 Iterations: 71 Function evaluations: 187 C11 = -54003.069881 +/- 0.007336 GPa C12 = 1.688759 +/- 0.005187 GPa C44 = -40501.970560 +/- 0.001834 GPa B = -17999.897454 +/- 0.004235 GPa