GaAs (ZnS, InAs, InP, AlAs, CdTe, HgTe)
GaAs lattice consists of two FCC sublattices displaced by [1/4,1/4,1/4]
Si (diamond, Ge)
The diamond lattice is similar to the GaAs one but is made of atoms of one kind.
is a high temperature superconductive crystal (Tc =
93oK). Y are red,
Ba - blue, Cu - yellow and O are white balls.