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Model of Ferrite Structure (cP16): AB11CD3_cP16_221_a_dg_b_c-001
Cubic · space group Pm-3m (No. 221) · Pearson cP16
Symmetry elements and Wyckoff positions (interactive)
Model of Ferrite Structure (cP16): AB11CD3_cP16_221_a_dg_b_c-001 in Pm-3m
SettingUnit cell
- Lattice constants
- a = 5.740 Å, b = 5.740 Å, c = 5.740 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 189.1 ų
- Atoms in the conventional cell
- 16 (Cr 1, Mo 1, Ni 3, Fe 11)
- Formula units Z
- 1
- Pearson symbol
- cP16 — cubic, primitive lattice, 16 atoms per conventional cell
- Symmetry operations
- 48 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Cr1 | Cr | 1a | 1 | 0.0000 | 0.0000 | 0.0000 |
| Mo4 | Mo | 1b | 1 | 0.5000 | 0.5000 | 0.5000 |
| Ni5 | Ni | 3c | 3 | 0.0000 | 0.5000 | 0.5000 |
| Fe2 | Fe | 3d | 3 | 0.5000 | 0.0000 | 0.0000 |
| Fe3 | Fe | 8g | 8 | 0.2450 | 0.2450 | 0.2450 |
The multiplicity and the Wyckoff letter say how many copies of the site the group makes in one cell and on which kind of symmetry element the site sits; the 16 atoms drawn above are these sites multiplied by all 48 operations. Press Wyckoff under Colour to see the sites, and tick a symmetry element on the left to see which atoms lie on it.
How to read the label
AB11CD3_cP16_221_a_dg_b_c-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol cP16, then the space-group number 221, then the Wyckoff letters occupied by each element in turn (Cr: 1a; Mo: 1b; Ni: 3c; Fe: 3d; Fe: 8g). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Note: Model Structure.
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry AB11CD3_cP16_221_a_dg_b_c-001 (M. J. Mehl et al., Comput. Mater. Sci. 136, S1 (2017); D. Hicks et al., ibid. 161, S1 (2019) and 199, 110450 (2021); S. Eckert et al., ibid. 240, 112988 (2024)). Symmetry elements, Wyckoff assignment and the diagram are computed on this page from the group operations.
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