Bilbao Crystallographic Server arrow MAGNEXT - Systematic absences for Magnetic Space Groups Help

Magnetic diffraction Systematic Absences for the group Cm'cm' (#63.464)
For this space group, BNS and OG settings coincide.
Its label in the OG setting is given as: Cm'cm' (#63.8.518)

Values of h, k, l:  h integer, k integer, l integer

Systematic absences for general reflections (produced by centrings):

Diffraction vector type:   (h k l)     ->      Systematic absence:    h + k = 2n + 1

Systematic absences for special reflections:

Diffraction vector type:   (0 k 0)     ->      Systematic absence:    k any

For k = 2: I = 0 F = (0,Fy,0)

Diffraction vector type:   (0 0 l)     ->      Systematic absence:    l = 2n + 1

For l = 1: I = 0 F = (0,0,Fz)
For l = 2: I /= 0 F = (0,Fy,0)

[Show form of structure factor for every type of reflection]

Go to the list of the General Positions of the Group Cm'cm' (#63.464) [OG:Cm'cm' (#63.8.518)]
Go to the list of the Wyckoff Positions of the Group Cm'cm' (#63.464) [OG:Cm'cm' (#63.8.518)]

[Show systematic absences in a different setting]

Bilbao Crystallographic Server
Licencia de Creative Commons
For comments, please mail to