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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Table 3553a and Figure 3553 show the monoclinic crystal systems and the schematic illustration of the monoclinic lattices, respectively.

Table 3553a. Monoclinic crystal systems.

Figure 3553. Schematic illustrations of the Bravais lattices of monoclinic crystals.

Table 3553b. Relationship between Laue classes and point groups.

System	Essential symmetry	Lattice symmetry	Laue class (Diffraction symmetry)	Point Groups (Hermann–Mauguin notation)
Triclinic	None			1, -1
Monoclinic		2/m	2/m	2, m, 2/m
Orthorhombic	222 or 2mm	mmm	mmm	222, mm2, mmm
Tetragonal		4/mmm	4/m	4, -4, 4/m
			4/mmm	422, -42m, 4mm, 4/mmm
Trigonal			3	3, -3
			-3m1	321, 3m1, -3m1
			-31m	312, 31m, -31m
Hexagonal		6/mmm	6/m	6, -6, 6/m
			6/mmm	622, -62m, 6mm, 6/mmm
Cubic	23	m3m	m-3	23, m-3
			m-3m	432, -43m, m-3m

For monoclinic structures, the lattice spacing (d-spacing) can be given by, (You can download the excel file for your own calculations)

         --------------------------------- [3553]
where,
        a, b and c -- The lattice constants.
        h, k, and l -- The Miller indices.

In crystals, anisotropy of many properties clearly arises because the arrangement of their atoms varies in different directions. In general, cubic crystals is less anisotropic than monoclinic ones because of their greater symmetry, for instance, with respect to electrical conductivity. Therefore, cubic crystals do not exhibit electrical polarization when the temperature is changed, so that their pyroelectric effect is isotropic.

Table 3553c. Centrosymmetric, non-centrosymmetric, and chiral space groups for monoclinic crystal systems.

Table 3553d. Other characteristics of monoclinic structures.