Rb fcc Morse_Shifted_GirifalcoWeizer_1959HighCutoff_Rb__MO_908110223949_002 7.0758357197 Warning: Maximum number of function evaluations has been exceeded. C11 = 2.374245 +/- 0.007336 GPa C12 = 1.866596 +/- 0.005187 GPa C44 = 1.927893 +/- 0.001834 GPa B = 2.035813 +/- 0.004235 GPa