Electron microscopy
 
P42/ncm (138) Space Group
- Practical Electron Microscopy and Database -
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Table 1855. P42/ncm (138) space group.

Name in the International Tables for Crystallography
P42/ncm P
123 4/mmm
Crystal system
Tetragonal 4/mmm
Asymm
0 ≤ x ≤ 1/4 and 0 ≤ y ≤ 1/2 and 0 ≤ z<=1 and x ≤ y and y ≤ 1/2-x
16 Absence of reflections

Symmetry (atomic coordinates)
X, Y, Z; -X, -Y, Z; 1/2-Y, 1/2+X, 1/2+Z; 1/2+Y, 1/2-X, 1/2+Z; 1/2-X, 1/2+Y, -Z; 1/2+X, 1/2-Y, -Z; Y, X, 1/2-Z; -Y, -X, 1/2-Z; 1/2-X, 1/2-Y, 1/2-Z; 1/2+X, 1/2+Y, 1/2-Z; Y, -X, -Z; -Y, X, -Z; X, -Y, 1/2+Z; -X, Y, 1/2+Z; 1/2-Y, 1/2-X, Z; 1/2+Y, 1/2+X, Z
Crystal examples
La2-xBaxCuO4

 

 

 

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