element(s): ['Sn'] AFLOW prototype label: A_cF8_227_a Parameter names: ['a'] model type (only 'standard' supported at this time): standard number of parameter sets: 1 Parameter values for parameter set 0: ['6.7273'] model name: MEAM_LAMMPS_VellaChenStillinger_2017_Sn__MO_316045643888_002 ==== Building ASE atoms object with: ==== representative atom symbols = ['Sn'] representative atom coordinates = [[0 0 0]] spacegroup = 227 cell = [[6.7273, 0, 0], [0, 6.7273, 0], [0, 0, 6.7273]] ========================================= Step Time Energy fmax BFGS: 0 17:32:47 -24.625163 1.3364 BFGS: 1 17:32:47 -24.700719 1.3019 BFGS: 2 17:32:47 -24.888952 1.2066 BFGS: 3 17:32:47 -25.062303 1.1034 BFGS: 4 17:32:47 -25.219572 0.9921 BFGS: 5 17:32:47 -25.359495 0.8721 BFGS: 6 17:32:47 -25.480739 0.7430 BFGS: 7 17:32:47 -25.581907 0.6043 BFGS: 8 17:32:47 -25.661523 0.4555 BFGS: 9 17:32:47 -25.718041 0.2962 BFGS: 10 17:32:47 -25.749833 0.1258 BFGS: 11 17:32:47 -25.756439 0.0075 BFGS: 12 17:32:47 -25.756462 0.0002 BFGS: 13 17:32:47 -25.756462 0.0000 BFGS: 14 17:32:47 -25.756462 0.0000 Minimization converged after 14 steps. Maximum force component: 2.3066229358081663e-32 eV/Angstrom Maximum stress component: 2.0664898911779284e-13 eV/Angstrom^3 ==== Minimized structure obtained from ASE ==== symbols = ['Sn', 'Sn', 'Sn', 'Sn', 'Sn', 'Sn', 'Sn', 'Sn'] basis = [[1.28281930e-34 0.00000000e+00 0.00000000e+00] [0.00000000e+00 5.00000000e-01 5.00000000e-01] [5.00000000e-01 5.00000000e-01 0.00000000e+00] [5.00000000e-01 1.02659051e-32 5.00000000e-01] [7.50000000e-01 2.50000000e-01 7.50000000e-01] [2.50000000e-01 2.50000000e-01 2.50000000e-01] [2.50000000e-01 7.50000000e-01 7.50000000e-01] [7.50000000e-01 7.50000000e-01 2.50000000e-01]] cellpar = Cell([[6.303511064958486, 3.9379153469867e-34, -2.5749927475616275e-33], [7.004882342297921e-33, 6.303511064958486, 3.9294984913530585e-17], [-3.992481894870692e-33, 3.92949849135306e-17, 6.303511064958486]]) forces = [[ 2.30662294e-32 -1.61868276e-32 -1.53774862e-32] [ 6.47473105e-33 -1.04202703e-32 -6.07006036e-33] [ 6.47473105e-33 1.61868276e-33 -1.21401207e-32] [-1.29494621e-32 -6.47473105e-33 -2.22568880e-33] [ 9.71209657e-33 4.85604829e-33 7.08173708e-33] [ 2.18522173e-32 1.61868276e-33 1.09261086e-32] [-8.09341381e-33 1.13307793e-32 9.71209657e-33] [-4.85604829e-33 9.58605583e-50 1.53774862e-32]] stress = [-2.06648989e-13 -2.06648989e-13 -2.06648989e-13 4.23958898e-29 -3.03551695e-62 -5.54097895e-62] energy per atom = -3.219557717437278 =============================================== Parameter sets [0] relaxed to duplicate structures, attempting to write only one of them. Successfully added property instance for parameter set 0