The first bismuth borate oxyiodide, Bi4BO7I: commensurate or incommensurate?
Abstract
The first bismuth borate oxyiodide, Bi4BO7I, is incommensurately modulated with q = 0.242 (3)c*. The wavevector is very close to the rational value of c*/4, yet refinement based on commensurate modulation faces serious problems indicating the incommensurate nature of the modulation.
- Publication:
-
Acta Crystallographica Section B
- Pub Date:
- November 2020
- DOI:
- 10.1107/S2052520620012640FILE: /proj/ads/abstracts/
- Bibcode:
- 2020AcCrB..76..992V
- Keywords:
-
- borate;
- incommensurately modulated structure;
- thermal expansion;
- bismuth;
- borate