element(s): ['Si'] AFLOW prototype label: A_hP2_194_c Parameter names: ['a', 'c/a'] model type (only 'standard' supported at this time): standard number of parameter sets: 1 Parameter values for parameter set 0: ['2.6864', '1.708383'] model name: SW_ZhangXieHu_2014OptimizedSW2_Si__MO_475612090600_005 ==== Building ASE atoms object with: ==== representative atom symbols = ['Si'] representative atom coordinates = [[0.33333333 0.66666667 0.25 ]] spacegroup = 194 cell = [[2.6864, 0, 0], [-1.3432, 2.3264906447265, 0], [0, 0, 4.5894]] ========================================= Step Time Energy fmax BFGS: 0 15:10:48 -4.314558 10.529873 BFGS: 1 15:10:48 -5.355890 4.204086 BFGS: 2 15:10:48 -5.563268 0.773984 BFGS: 3 15:10:48 -5.573028 0.404750 BFGS: 4 15:10:48 -5.577569 0.486128 BFGS: 5 15:10:48 -5.582501 0.345731 BFGS: 6 15:10:48 -5.584103 0.112439 BFGS: 7 15:10:48 -5.584250 0.018517 BFGS: 8 15:10:48 -5.584256 0.002581 BFGS: 9 15:10:48 -5.584256 0.000248 BFGS: 10 15:10:48 -5.584256 0.000019 BFGS: 11 15:10:48 -5.584256 0.000000 BFGS: 12 15:10:48 -5.584256 0.000000 Minimization converged after 12 steps. Maximum force component: 3.5036725944884977e-32 eV/Angstrom Maximum stress component: 1.6411512382575748e-10 eV/Angstrom^3 ==== Minimized structure obtained from ASE ==== symbols = ['Si', 'Si'] basis = [[0.33333333 0.66666667 0.25 ] [0.66666666 0.33333334 0.75 ]] cellpar = Cell([[2.842516907140187, 8.01972174784671e-18, -2.75363746176429e-38], [-1.4212584535700934, 2.4616918522701736, -5.81725873628905e-38], [-7.582414782045841e-37, 1.967310256701765e-36, 4.641810672394277]]) forces = [[ 3.50367259e-32 -2.02284632e-32 2.51746985e-70] [-2.33578173e-32 2.02284632e-32 -3.64884325e-70]] stress = [-1.64115124e-10 -1.64115124e-10 -3.64399624e-11 -1.16027834e-46 -9.10804650e-47 -6.58101497e-27] energy per atom = -2.792128047024601 =============================================== Parameter sets [0] relaxed to duplicate structures, attempting to write only one of them. Successfully added property instance for parameter set 0