Download citation
Download citation
link to html
The advantages of using the high-symmetry superspace-group description for the refinement of modulated commensurate structures are discussed, using the ferroelectric phase of Rb2ZnCl4 as an example. It is shown that the refinement process is faster and easier to handle than when the usual low-symmetry description is used. Through the choice of a common superspace group for the incommensurate and the lock-in structures, a natural physical hierarchy between the structural parameters may be established, allowing an appropriate block separation and thus accounting efficiently for correlations.
Follow Acta Cryst. A
Sign up for e-alerts
Follow Acta Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds