
Simple Cubic Crystals
 Practical Electron Microscopy and Database 
 An Online Book 

http://www.globalsino.com/EM/

This book (Practical Electron Microscopy and Database) is a reference for TEM and SEM students, operators, engineers, technicians, managers, and researchers.

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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, V_{atom}/V_{cell}) 
Simple cubic 
1 
1 

When the adjacent atoms touch each other along the edge
of the cube 
52.4% 

2 
2 

When the adjacent atoms touch each other along
the body diagonal of the cubic cell 
68.0% 

4 
4 

When the adjacent atoms touch each other along
the face diagonal of the cubic cell 
74.0% 

4 
8 


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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