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, Vatom/Vcell)
Simple cubic	1	1		When the adjacent atoms touch each other along the edge of the cube	52.4%
BCC	2	2		When the adjacent atoms touch each other along the body diagonal of the cubic cell	68.0%
FCC	4	4		When the adjacent atoms touch each other along the face diagonal of the cubic cell	74.0%
Diamond	4	8			34 %

Table 2874c. Other characteristics of simple cubic structures.