32.3 Crystal Structure and Complex Lattice I Crystal structure is the rea l arrangement of atom in crystals Crystal structure= Space lattice Basis or structure unit
◆Ⅰ.Crystal structure is the real arrangement of atom in crystals Crystal structure ＝ Space lattice + Basis or structure unit §2.3 Crystal Structure and Complex Lattice
+ =
The difference between space lattice and crystal structure Fe Fe:A|=1:1 A
Fe : Al = 1 : 1 Fe Al The difference between space lattice and crystal structure
2×3 atoms/cell
2×3 atoms / cell
◆川. Typical crystal structures of metals 1. BCC O EXample: a-Fe, V, Nb Ta. Cr Mo, W alkali metals 2 n=2 atoms/cell 8CN=8 4 The number of nearest neighbours around each atom is called Coordination Number
1. BCC Example: α-Fe , V, Nb, Ta, Cr, Mo, W, alkali metals n = 2 atoms/cell CN=8 The number of nearest neighbours around each atom is called —— Coordination Number. ◆Ⅱ.Typical crystal structures of metals