Enter a species (e.g. Al, Fe): Sr Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: Morse_Shifted_GirifalcoWeizer_1959HighCutoff_Sr__MO_497591319122_002 Enter hexagonal lattice constants 'a' and 'c' (m): 4.291584197395004e-10, 7.010377457415575e-10 Calculating isothermal bulk modulus Optimization terminated successfully. Current function value: -3.461077 Iterations: 74 Function evaluations: 196 Finished calculation C11 = 24.713730985083746 GPa C12 = 5.936066169351766 GPa B = 12.195287774595759 GPa