Electron microscopy
 
4/mmm Point Group
- Practical Electron Microscopy and Database -
- An Online Book -
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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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For symbols of many point groups, if the rotation axis can be unambiguously obtained from the combination of symmetry elements presented in the symbol, the n-fold rotation axes in n/m positions can then be ignored. From instance, the short symbol for 4/m 2/m 2/m (4/m 2/m 2/m) point group is 4/mmm (4/mmm).

Table 2973 list all the space groups which have point group 4/mmm.

Table 2973. All space groups which have point group 4/mmm.
Space Group Patterson Space Group Number of Symmetry Operators Crystal System Laue Class Lattice Type
P4/mmm 123 16 Tetragonal 4/mmm P
P4/mcc 123 16 Tetragonal 4/mmm P
P4/nbm 123 16 Tetragonal 4/mmm P
P4/nnc 123 16 Tetragonal 4/mmm P
P4/mbm 123 16 Tetragonal 4/mmm P
P4/mnc 123 16 Tetragonal 4/mmm P
P4/nmm 123 16 Tetragonal 4/mmm P
P4/ncc 123 16 Tetragonal 4/mmm P
P4(2)/mmc 123 16 Tetragonal 4/mmm P
P4(2)/mcm 123 16 Tetragonal 4/mmm P
P4(2)/nbc 123 16 Tetragonal 4/mmm P
P4(2)/nnm 123 16 Tetragonal 4/mmm P
P4(2)/mbc 123 16 Tetragonal 4/mmm P
P4(2)/mnm 123 16 Tetragonal 4/mmm P
P4(2)/nmc 123 16 Tetragonal 4/mmm P
P4(2)/ncm 123 16 Tetragonal 4/mmm P
I4/mmm 139 32 Tetragonal 4/mmm I
I4/mcm 139 32 Tetragonal 4/mmm I
I4(1)/amd 139 32 Tetragonal 4/mmm I
I4(1)/acd 139 32 Tetragonal 4/mmm I

 

 

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