#Exercise 2.1 (ZrSiO4: origin 1) # Space Group ITA number 141 # Lattice parameters 6.60 6.60 5.88 90 90 90 # Number of independent atoms in the asymmetric unit 3 # [atom type] [number] [WP] [x] [y] [z] Zr 1 4a 0 0 0 Si 1 4b 0 0 0.5 O 1 16h 0 0.2 0.34 #Exercise 2.1(ZrSiO4: origin 2) # Space Group ITA number 141 # Lattice parameters 6.6164 6.6164 6.0150 90 90 90 # Number of independent atoms in the asymmetric unit 3 # [atom type] [number] [WP] [x] [y] [z] Zr 1 4a 0 0.75 0.125 Si 1 4b 0 0.75 0.625 O 1 16h 0 0.067 0.198 #=================================== #Exercise 2.2 #(Fe2O3:Gich) # Space Group ITA number 33 # Lattice parameters 5.0885 8.7802 9.4709 90 90 90 # Number of independent atoms in the asymmetric unit 10 # [atom type] [number] [WP] [x] [y] [z] O 1 - 0.978 0.3282 0.4314 O 2 - 0.515 0.4907 0.4187 O 3 - 0.650 0.9979 0.1883 O 4 - 0.160 0.1637 0.1956 O 5 - 0.841 0.1680 0.6669 O 6 - 0.527 0.1637 0.9362 Fe 7 - 0.1928 0.1506 0.5807 Fe 8 - 0.6826 0.0291 0.7897 Fe 9 - 0.1858 0.1519 0 Fe 10 - 0.8104 0.1580 0.3071 #(Fe2O3:Kelm) # Space Group ITA number 33 # Lattice parameters 5.0715 8.7359 9.4178 90 90 90 # Number of independent atoms in the asymmetric unit 10 # [atom type] [number] [WP] [x] [y] [z] O 1 - 0.337 0.853 0.887 O 2 - 0.019 0.474 0.610 O 3 - 0.453 0.677 0.651 O 4 - 0.527 0.669 0.100 O 5 - 0.868 0.334 0.863 O 6 - 0.336 0.513 0.891 Fe 7 - 0.204 0.3509 0.7726 Fe 8 - 0.807 0.6605 0.693 Fe 9 - 0.6768 0.8427 0.0000000 Fe 10 - 0.6852 0.4634 0.983 #=============================== #Exercise 2.3 (Koch and Fischer): #(i)KAsF6 148 7.3480 7.3480 7.2740 90.00 90.00 120.00 3 K 1 3b 0.333333 0.666666 0.166666 As 1 3a 0 0 0 F 1 18f 0.1292 0.2165 0.1381 #(ii)BaIrF6 148 7.3965 7.3965 7.2826 90.00 90.00 120.00 3 Ba 1 3b 0.333333 0.666666 0.166666 Ir 1 3a 0 0 0 F 1 18f 0.0729 0.2325 0.1640 #(iii)BaSnF6 148 7.4279 7.4279 7.4180 90.00 90.00 120.00 3 Ba 1 3a 0 0 0 Sn 1 3b 0 0 0.5 F 1 18f 0.2586 0.8262 0.0047 #=================================== #Exercise 2.4: Pb3(PO4)2 #lead phosphate: high-symmetry phase (ICSD: CC8095) 166 5.56 5.56 20.39 90 90 120 5 Pb 1 3a 0 0 0 Pb 2 6c 0 0 0.2126 P 1 6c 0 0 0.4021 O 1 6c 0 0 0.329 O 2 18h 0.181 -0.181 0.096 #Lead Phosphate: low-symmetry phase: Guimaraes T=25C 15 13.80 5.691 9.42 90 102.3 90 7 O 1 8f 0.643 0.030 0.392 O 2 8f 0.634 0.464 0.374 O 3 8f 0.642 0.280 0.612 O 4 8f 0.491 0.222 0.420 P 1 8f 0.599 0.241 0.447 Pb 1 4e 0 0.291 0.25 Pb 2 8f 0.317 0.309 0.352 #=================================== #Exercise 2.5: Pb2MgWO6:Pseudo1 # Space Group ITA number 62 # Lattice parameters 11.4059 7.9440 5.6866 90.00 90.00 90.00 # Number of independent atoms in the asymmetric unit 8 # [atom type] [number] [WP] [x] [y] [z] Pb 1 8d 0.1422 0.0032 0.7804 Mg 1 4c 0.3772 0.25 0.7519 W 1 4c 0.1161 0.25 0.2577 O 1 8d 0.1314 0.4907 0.2365 O 2 4c 0.0027 0.25 0.0133 O 3 4c 0.0103 0.25 0.4991 O 4 4c 0.237 0.25 -0.0153 O 5 4c 0.2491 0.25 0.4745 #=============================== ##Exercise 2.6: ferroelectric_NaSb3F10:Pseudo2 # Space Group ITA number 173 # Lattice parameters 8.285 8.285 7.600 90. 90. 120. # Number of independent atoms in the asymmetric unit 6 # [atom type] [number] [WP] [x] [y] [z] Sb 1 6c 0.883700 0.224300 0.250000 Na 1 2b 0.333300 0.666700 0.167000 F 1 6c 0.204000 0.393000 0.994000 F 2 6c 0.111000 0.229000 0.340000 F 3 6c 0.035000 0.491000 0.281000 F 4 2b 0.666700 0.333300 0.245000 #=================================