K fcc Morse_Shifted_GirifalcoWeizer_1959MedCutoff_K__MO_202712315930_002 6.58233079314 Warning: Maximum number of function evaluations has been exceeded. C11 = 3.677631 +/- 0.007336 GPa C12 = 2.775503 +/- 0.005187 GPa C44 = 2.849961 +/- 0.001834 GPa B = 3.076212 +/- 0.004235 GPa