Ar diamond Morse_QuinticSmoothed_Jelinek_1972_Ar__MO_908645784389_002 8.52219220996 Optimization terminated successfully. Current function value: -0.258279 Iterations: 72 Function evaluations: 187 C11 = 0.409602 +/- 0.007336 GPa C12 = 0.536491 +/- 0.005187 GPa C44 = -0.156038 +/- 0.001834 GPa B = 0.494195 +/- 0.004235 GPa