The cubic close-packed Al structure of copper

Symbol and name Examples Symbol and name Examples 

cubic close-packed, copper Cu, Ag, Au, Al A2, body-centred cubic, iron Fe, Mo, W, Na 

fluorite CaF2, BaF2, U02, Th02 C4, rutile Ti02, Sn02, MgF2, FeF2 

A number of elemental metals crystallise with the cubic Al structure, also called the copper structure. 

2Lattice parameters and interatomic distances in crystal structures are usually reported in Angstrom units, A, in crystallographic literature. 1 A is equal to 10 lom, that is, 10 A = 1 nm. In this book, the SI unit of length, nm, will be used most often, but A will be used on occasion, to conform with crystallographic practice. 

---