Simple Cubic Crystals
- Practical Electron Microscopy and Database -
- An Online Book -

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Simple cubic crystals with only one element are rare, mostly because they tend to distort.

Table 2874a. Some symmetrical diffraction patterns of cubic crystals.

Zone axis
[100]
[110]
[111]
Symmetry
Square
Rectangular
Hexagonal
Aspect Ratio
1:1 1: for BCC, SC (almost hexagonal for FCC) Equilateral

Table 2874b lists the characteristics of the three cubic Bravais lattices.

Table 2874b. The only three cubic Bravais lattices.

Lattice
Number of
lattice points
per unit cell
Number of
atoms per unit cell
Nearest distance
between lattice points
Maximum packing
Maximum packing condition
Density (or fraction of packing, Vatom/Vcell)
Simple cubic
1 1 Nearest distance When the adjacent atoms touch each other along the edge
of the cube
52.4%
2 2 Nearest distance When the adjacent atoms touch each other along the body diagonal of the cubic cell 68.0%
4 4 Nearest distance When the adjacent atoms touch each other along the face diagonal of the cubic cell 74.0%
4 8 Nearest distance 34 %

Table 2874c. Other characteristics of simple cubic structures.

Contents
Page
Close packed planes and directions page3029
Atomic packing factor page3030
Number of lattice points (atoms) per unit cell page3032
Lattice point (or called Motif or basis) page3076
Coordination number of atoms page3031
Tables of Burgers vectors of dislocations and g·b page1995
Dominating slip planes, slip directions and stable Burgers vector for common crystal structures page3557

 

 

 

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