International
Tables for
Crystallography
Volume D
Physical properties of crystals
Edited by A. Authier

© International Union of Crystallography 2006
International Tables for Crystallography (2006). Vol. D. ch. 3.1, p. 345

Figure 3.1.2.8 

J.-C. Tolédanod*
[Figure 3.1.2.8]
Figure 3.1.2.8

Schematic representation of the displacement associated with the order parameter in a crystal having trigonal (rhombohedral) symmetry.