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Simple Cubic lattice
(5x5x5, 7x7x7 atoms cells).
You can choose [100], [110] or [111] viewpoint direction. I've removed
perspective for all 7x7x7 lattices.
The Wigner-Zeitz cell for the Simple Cubic lattice is
cube (the cell coincides with the unit cell).
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Body Centered Cubic (BCC) unit cell,
5x5x5 and 7x7x7 lattices.
α-Fe, Na, K, β-Ti have this structure.
The Wigner-Zeitz cell for the BCC lattice is
truncated octahedron
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Face Centered Cubic (FCC) unit cell,
5x5x5 and 7x7x7 lattices.
Cu, Au, Ag, Al, Pt, Pd have this structure. Sorry, I don't know how to bind
nodes in FCC and BCC lattices because square grid breaks the nodes equivalence
(but the balls do not fall without grid :)
The Wigner-Zeitz cell for the FCC lattice is
rhombic dodecahedron.
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NaCl (KCl, MgO, BaO, CaO, SrO) unit cell.
You can see an atom name in your browser Status bar (thanks to
Sandy Ressler).
5x5x5 and 7x7x7 cells.
NaCl lattice consists of two FCC sublattices. The Na sublattice (white balls)
is displaced by [1/2,0,0] relative to the Cl sublattice (yellow
balls).
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GaAs (ZnS, InAs, InP, AlAs, CdTe, HgTe)
unit cell (5x5x5, 7x7x7).
GaAs lattice consists of two FCC sublattices displaced by [1/4,1/4,1/4]
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Si, Ge (or diamond) unit cell
(5x5x5, 7x7x7). Diamond
lattice is similar to the GaAs one but is made of atoms of one kind.
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SrTiO3 (CaTiO3) unit
cell and 5x5x5 lattice.
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YBa2Cu3O7
is a high temperature superconductive crystal (Tc =
93oK). 7x5x5 lattice. Y are red,
Ba - blue, Cu - yellow and O are white balls.
Superconducting atomic Cu-O2 planes.
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